This is a great thread.
Honestly, everywhere you go, minus Bob Jones, you will have heavy party people and people who choose not to. I went to a school that was pretty reminicient of the movie PCU. I have to say we did have some great parties, but some of my favorite nights were just being loud around the house. I found my balance and had a lot of sisters who did not drink. I don't really think I know of anyone who was pressured to do something they didn't want. That, at least at my college, was considered more of a high school thing. Cool did not exist. We were all losers.
Choose a school for the academics, don't worry about the social scene too much unless it is very small, then it might be more of a consideration. You'll find your nitche
Good Luck! And if you rush, keep us updated! We like those stories.