I tried a few different housing arrangements. In a dorm if you don't enroll you have to pack up and go. Unless it was a bug this was not the case for university housing with roomies. I never got a re-enrol message until I initiated one and when I said no to that I had to go. Before then I stayed on for a couple of days just hanging out. But it was awful. Many, many students kept dropping by so it was constant party time. Two of my roomies left but I think I could have assigned beds to others. Next I tried buying the small residential house. That was the best. I could have stayed unenrolled as long as I wanted to. A bit more expensive but I had a garden and and did programming. Lonelier of course for a single.