Due Date should have just been a spinoff of The Hangover franchise
https://www.reddit.com/r/movies/comments/e38zhr/due_date_should_have_just_been_a_spinoff_of_the/
Ethan Tremblay and Alan are the same exact characters. Look, mannerisms....everything. They should have just had this be a spinoff and made more of them. Zach Galifianakis in the lovable idiot role.share
The Hangover movies got old by the third one but the characters had potential to be interesting in thier own movies, especially Alan.