Critics don't know what they are talking about
It seems that these days critics can't be happy with a movie unless its "art" or breaks convention.
Sometimes a good old fashioned story is what you want. Yes this film didn't offer any surprises, but you know what, I don't care. It was fun, it was funny, it was well told.
64% of reviewers on the web thought this movie wasn't worth seeing. That just tells me that 64% of reviewers are pretentious snobs that can't just sit back and enjoy a light-hearted film.
Go see this film, if you let yourself, you'll like it.