What Happens in Vegas? Not much.
This derivative rom-com works best when the leads (Cameron Diaz and Ashton Kutcher) are exacting revenge on each other after an alcohol-induced one night stand results in both a jackpot and a marriage both are determined to destroy. After that you still have about 45 minutes to endure rather than enjoy.
Rated PG-13 for some sexual content, language, a drug reference.