I'm pretty introverted and like a few of you I don't drink. That meant that I didn't really go to the SU (Which was considered pretty poor anyway) and I think I only once went to a pub in my whole Foundation year. Freshers week didn't make me any friends, really, they came after- once all the mentalness had calmed down. I made two pretty good friends, and was friendly with lots of people through them, too. Some were introverted like me, but my best friend did go out on occassion, but it meant that I could act something of a blanket when he came back feeling a bit ill or didn't want to go out. You might get left out sometimes if you're not outgoing, but if you're friendly and caring to people, people will still like you- most people like to spend some quiet relaxy time too.