The traditional story structure of the first two is changed for a bigger-than-life mobster heist story where most cast members are dropped for an entry that seem more suited as a spin-off film project spinning around Zach Galifianakis and Ken Jeong. The film drags and is filled with bad taste so I started dreaming for some alcohol myself so that I could have a hangover and forget the events of this film the next day.
There's one point when watching Ken Jeong sing "Hurt" in a Tijuana karaoke bar that Bradley Cooper asks, "what the fuck am I watching?" While that was one of maybe a handful of giggles The Hangover Part III had to offer I can't help but feel that way through most of the movie. Still better than the second part but that's saying very, very little...
One wonders at just the level of contempt the filmmakers had for their fans in making this bitchslap of a third installment. Devoid of laughs the franchise suddenly wants to be action oriented instead of comedic with just atrocious results. One or two chuckles (Ken Jeong) don't make a comedy. Even the coda just plays as desperate. Another entry for movie hell.
Although this gets bad reviews, I thought this one was slightly better than the second one: it tried to go along another route and it didn't carbon copy its predecessor. Some of the gags were still funny but maybe audiences won't like them as much because we know who the 'wolfpack' are, and thus, know what to expect. I thought it was a nice close to the franchise.