Well USC isn't in the most commercial area so there isn't too much to do within walking distance of the campus, although there is plenty to do in LA if you have a car (or a friend with a car, or the metro which sucks). As far as the actual school goes, people do drink and party a good amount, but no more than any other typical American university. I would say it's easy to avoid it if that's not your thing and there are plenty of people who don't or do only once in a while. The school offers a lot of activities including football games, basketball games, any sports for that matter, as well as many special events on campus. There are guest speakers, concerts, plays, movie screenings, open mic nights, and much more all on campus. The school draws all kinds of students and is fairly big, so there will be people like you.