Willy's Chocolate Experience was an unlicensed event based on Charlie and the Chocolate Factory that took place in Glasgow, Scotland, in February 2024. The event was promoted as an immersive and interactive family experience, illustrated on a promotional website with "dreamlike" AI-generated images. After it was discovered that the event was held in a sparsely decorated warehouse, many customers complained, and the police were called to the venue. The event went viral on the Internet and attracted worldwide media attention.

The event drew comparisons to the 2008 Lapland New Forest controversy, the 2014 Tumblr fan convention DashCon, and Billy McFarland's 2017 Fyre Festival.

The event was stated to take place over the weekend of 24–25 February 2024. Promotional material advertised "stunning and intricately designed settings inspired by Roald Dahl's timeless tale" and "an array of delectable treats scattered throughout the experience". Both the website and promotional material used poor-quality AI-generated images, which included several spelling errors such as "cartchy tuns" and "a pasadise of sweet teats" and nonsensical words such as "catgacating". Tickets cost up to £35 (US$45) per person. While the event was being promoted in early February, a Reddit user who saw Facebook adverts suspected it to be a scam and was surprised that people were apparently buying tickets based solely on AI-generated images.

The event was organised by House of Illuminati, a company registered to Billy Coull which claims to offer "unparalleled immersive experiences". Rolling Stone concluded that the organisation's websites and event descriptions were likely written by an AI chatbot, such as ChatGPT. Coull had also registered several other companies and claimed to work as a "consultant" for the now-defunct brand Empowerity. In 2021, he co-directed a now-defunct Glasgow food bank, and in summer 2023 he independently published 17 AI-generated books on various topics, including vaccine conspiracy theories.

Three actors were hired to portray "Willy McDuff", a character based on Willy Wonka. Actor Paul Connell said that the cast were given one day to learn the script. Another actor playing Willy McDuff was 18-year-old Michael Archibald; the experience was his first ever acting job, and he was given the script at 6pm on Friday before the event began on Saturday.

Actress Kirsty Paterson, who played one of the Oompa-Loompas (called "Wonkidoodles" in the script), said that the job offer had been posted on Indeed.com and offered £500 for two days of work. The day before the event, the actors attended a dress rehearsal at the sparsely decorated venue. They were told that others would be working through the night on the production. When they returned on the day of the event, the venue was in the same condition. Paterson was given her costume an hour before the event opened, saying that "We were just handed an Amazon box that probably arrived that morning."

The script for the event is titled Wonkidoodles at McDuff's Chocolate Factory: A Script, and describes McDuff leading an audience through the Garden of Enchantment and the Twilight Tunnel. Once there, they are confronted by a character called The Unknown, described as "an evil chocolate maker who lives in the walls" who seeks to steal the magical "Anti-Graffiti Gobstopper" from McDuff's Imagination Lab. The gobstopper is "a sweet so powerful, it can make any room sparkle without lifting a finger". McDuff defeats The Unknown by amplifying the power of the gobstopper and causing his enemy to be "gently swept up by a robotic vacuum, humorously ending the confrontation".

The script was unusual in that it included stage directions for the audience, and descriptions of their reactions. Connell described it as "15 pages of AI-generated gibberish of me just monologuing these mad things", and compared the vacuum cleaner plot point to that of the video game Luigi's Mansion. Interviewed after the event, Coull claimed to have written the script himself, using AI only to "check spelling, grammar, and continuity".

The event was held at the Box Hub Warehouse event space in Whiteinch, an industrial area of Glasgow. Customers described the venue as "little more than an abandoned, empty warehouse", with set dressings including a small bouncy castle, AI-generated backdrop images pinned to some of the walls, and props which were "strewn about on bare concrete floors". The venue's windows were dirty and its air conditioning systems were left exposed. Paterson has stated that by the time she saw the venue, she had already signed her contract and "didn't want to disappoint the kids", and thus chose to proceed with the work.

The Unknown was played by a 16-year-old actress named Felicia Dawkins, who wore a silver mask and a black cloak. Young children were frightened by the character, who appeared from behind a large rectangular mirror. Despite the script calling for The Unknown to be defeated with a vacuum cleaner, no such prop was provided, and actors were instead asked to improvise.

Connell said that he and other employees were told to give each child "two jelly beans and a quarter of a cup of lemonade", although the limited supply of jelly beans quickly ran out. Paterson and another "Wonkidoodle" actress, Jenny Fogarty, said that after the first three 45-minute performances, the cast were told to abandon the script and instead let guests walk through the venue, a process that Paterson said took "about two minutes". The character of The Unknown, previously introduced as the main antagonist, was now "scaring children for no reason". One of the actors playing McDuff improvised the idea that children should pull a "silly face" at The Unknown to scare them away, but Dawkins said that, in other cases, she "just had to awkwardly walk back to my corner".

Connell was told he would be given a 15-minute break every 45 minutes, but on the day of the event, he played Willy McDuff for three and a half hours without a break. After returning from a lunch break, Connell encountered a crowd of customers demanding refunds from Coull, and the other actors were unsure what to do next. After being told that the event was now cancelled halfway through its opening day, the actors left and went to a pub. Upon returning to the venue some time later, Connell said that he felt "the threat of violence had become quite high" and that there were two police vans and two squad cars at the scene.

Willy's Chocolate Experience was widely criticised by those who attended it, with many demanding refunds. One customer, who had driven with his children for two hours to reach the event, described it as an "absolute con". Other visitors who arrived after the event was closed and were not informed of its cancellation requested compensation for wasted rail fares. Following the event's cancellation, Coull offered to refund 850 people, a statement repeated by the event's Facebook page, with some Facebook users stating that they had received their money back. Paterson and Fogarty would later state that they had received half of the £500 due to them.

Box Hub, the organisation that rented the warehouse to House of Illuminati, issued an apology and offered to provide a venue free of charge for those who attended the event. Box Hub apologised on behalf of House of Illuminati, stating that they "either have no regards for the families and young children they have disappointed or are too embarrassed to comment". House of Illuminati later stated that they would not host any future events.

Coull deleted his LinkedIn profile, YouTube channel and personal website in response to the controversy. A few days after the event, Paul Connell said he felt that Coull was "probably one of the most disliked people in Glasgow right now". In an interview with The Sunday Times, Coull apologised for how the event turned out, saying he would accept responsibility.

In an interview with Wired magazine, Connell stated that he and the other actors were working with parents to provide a free show for the children who attended.

Some items from the event were later auctioned for charity. The venue auctioned the leftover hand-written "event cancelled" sign, raising £850 for a local children's hospital, while the Monorail Music record store in Glasgow auctioned two of the backdrops "rescued from the bin by a pal of the shop" for £2,250, with the proceeds going to the British charity Medical Aid for Palestinians.

A picture of a dispirited Paterson playing a Wonkidoodle in the "Jellybean Room" (in reality, a table covered in chemistry equipment) became a popular depiction of the event. The image became a meme and was compared to a picture of a "meth lab" and to Édouard Manet's 1882 painting A Bar at the Folies-Bergère, which depicts "an alienated woman at work". The character of "The Unknown" was also featured in several memes. Some Twitter users expressed plans to dress up as the character for Halloween. The event was spoofed on Jimmy Kimmel Live! in April 2024 in a skit called "Charlie and the Chocolate Factory Part Two", featuring Freddie Highmore, who had played Charlie Bucket in the 2005 film Charlie and the Chocolate Factory.

On 6 March 2024, Labour party leader Keir Starmer joked in the House of Commons that it seemed chancellor Jeremy Hunt had been taking marketing lessons from the event, in reference to Hunt's promises regarding childcare. Similarly, Penny Mordaunt joked that she was under the impression that the Scottish National Party had organised the Glasgow event given its "high cost, poor return, and the fact that the police were called."

An hour-long documentary about the event, called Wonka: The Scandal that Rocked Britain, was commissioned by Channel 5 on 6 March 2024 and broadcast on 16 March 2024. The programme included interviews with Coull and the actors from the event. It received 2 stars out of 5 from The Guardian, which described it as having "the strong whiff of someone vastly overexplaining the joke" and that the "only real scoop" was the interview with Coull.

Following the popularity of the event, Felicia Dawkins was offered the opportunity to train with the performance team and make a guest appearance acting in the London Dungeon, a haunted house attraction in London. A London Dungeon spokesperson said the aspiring actor who played The Unknown is "clearly a natural when it comes to the art of the scare". In April 2024, Kirsty Paterson appeared at a "Willy's Chocolate Experience LA" cocktail and performance evening. It was staged by a collective of local artists in Los Angeles, unaffiliated with the Glasgow event. Attendees were offered three jelly beans, and proceeds were donated to the National Alliance on Mental Illness. The Guardian was positive in its review of the event, noting that Paterson was severely jetlagged during her performance but asked, "how can you complain when shoddiness is the point?"

Richard Kraft produced a musical stage reading about the event for the 2024 Edinburgh Festival Fringe, including performances from actress and comedian Riki Lindhome, actresses Shelley Regner and Cassandra Parker, actor Eric Petersen, Broadway songwriters Alan Zachary and Michael Weiner, director Andy Fickman, Emmy Award winners Tova Litvin and Doug Rockwell and Kirsty Paterson, who played herself and a narrator. He also recruited cast members from Willy Wonka & the Chocolate Factory, including Paris Themmen who played Mike Teevee and Julie Dawn Cole who played Veruca Salt. The Stage gave it two stars, saying that "the show is self-aware enough to point out that we're watching a crappy, thrown-together piece of entertainment based on a crappy, thrown-together piece of entertainment".

• Willy Choclate Experience at the Wayback Machine (archived 24 February 2024) [sic]
• Script for the event obtained by Gizmodo