:) Good for standing up for yourself! But do remember that everyone's just started at uni/college, and everyone will be going crazy and celebrating the first few weeks. It will die down :)
Living away from your parents can be scary, but once you get used to doing everything for yourself the freedom is great.
Oh, I remember my drunken flatmates arriving home ^^ I'd be dozing off around 2am, and then they'd come singing into the flat xD Or race up and down playing with everyone's umbrellas, which we left in the corridor. They'd disappear in a while, but it was usually quite funny listening xD And if they did disturb my sleep they always apologised for it the next day. I had great flatmates, although my next door neighbour, Chen Yu, never socialised with us. We only knew he was alive because I could hear him singing in Chinese at 3am.