By virtue of anyone being under 21 there (which was usually about 2/3s of those attending, since most older people went to bars) we were doing something illegal

By virtue of anyone being under 21 there (which was usually about 2/3s of those attending, since most older people went to bars) we were doing something illegal. Additionally, noise complaint citations were a thing, and were often the reason why the cops came in the first place. Not that we were trying to be obnoxious about it, but when you pile 80-100 people in one location they're not going to be quiet. I also think that the consequences of being cited have increased, or at least became more complicated. I (and many people I knew) were paranoid about running into legal trouble because of job prospects. Any opportunity to get a citation expunged was worth it.