During the week people do a lot of things with clubs, sports, study groups, etc - we're only taking 3 classes, but it's in 10 weeks so the workload picks up quickly and so the weeks are generally more focused on on-campus activities. There's clubs and whatnot, and the college brings in a lot of interesting speakers and presentations as well (like yesterday we had a reading by the beat poet Hettie Jones).
There's a good amount of partying on the weekends, probably because we work so hard during the week. Friday and Saturday nights there are off-campus parties that people go to -- there's stuff to do if you don't drink, but the students who do are more visible than their non-drinking counterparts, so to speak.
One thing I've noticed about K is that, though there are cliques to an extent, people are very friendly and they're very open cliques. It's really easy to find something to do and someone to do it with