Long shot here... trying to find out the name of a movie I saw awhile ago that I was telling the guys at work about. I don't remember it all that well, but I think a husband and wife go on a honeymoon and meet up with some other couple - get just loaded - next day the wife is sick so she doesn't want to go out, so the husband goes scuba diving or snorkelling or something with the other chick (from the couple they met the night before). When he gets back to the hotel his wife is missing and there's no record of them ever having checked in.

Anyone seen it?