You don't have to be a 12 year old girl to enjoy this film. My wife and I (50 years old) have watched this movie twice and we love it. Yeah, it's full of stereotypes and there's nothing especially groundbreaking here, but it's fun, wholesome, has some nice music, and is remarkably well produced for such a small budget film. I can see bright futures for several of the actors in this film as well.
Most of the reviewers feel compelled to mention Mormonism (many of the makers of this film are LDS and it was originally released to target LDS audiences in Utah) but rest assured if you're one of those folks that have unfortunately formed some weird preconceived notion of what that means, get over it! Yes, I think these characters and values do accurately reflect LDS members, but I can't fathom how this movie would be any different if you substituted any other church. And it's NOT a preachy church movie! Just characters with good and wholesome values who are having a great experience at Bible camp. Drat! Now I went and mentioned it too!
Just relax and have fun. Share it with your kids and grand kids. There are some wonderful messages here, especially for the young ladies.