The Hangover Part II did not have the full support of my entire cast and crew." Liam Neeson replaced Gibson after being invited by Cooper, who worked with Neeson on "The A-Team", to take the part. Neeson, a fan of the first film stated, "I just got a call to do a one-day shoot on 'Hangover 2' as a tattooist in Thailand, and that's all I know about it". Gibson was reportedly furious over the decision. A source close to Gibson stated, "He doesn't understand why Mike Tyson, a drug user who turned his life around, was given a chance while Mel was kicked
The Hangover Vegas Convention and Visitors Authority received numerous inquiries from persons interested in recreating some of the film's most wild scenes, such as those involving a tiger. The Las Vegas branch of Madame Tussauds added "Hangover"-themed rooms recreating the hotel room and the wedding chapel and a tie-in rooftop cocktail bar. In 2018 Hasbro issued a parody version of their board game "Clue" where players have to locate a missing friend somewhere in the city after a wild night of carousing. Principal photography of "The Hangover Part II" began in October 2010, with Bradley Cooper, Ed Helms, Justin Bartha, and Zach