Quite entertaining as an entry in this tried-and-true genre of "guys going on a inadvertent wacky adventure, " and I like how this one is set up as a kind of mystery.
If you want to have some fun with your friends you can certainly watch this movie [unrated edition], but the story is bit repetitive, movie represent how friends roll and help out each other, and they set out to solve the mystery of one night after which they have a lost friend who is about to be engaged same day; a tiger and a baby in their hotel room.
moral: Dont have roofies in Vegas.
tomatometer: 78%
IMDB: 7.9/10