It goes for any fresher really, but leave your door open at all times during the first few weeks at least, or you won't make any friends.
The Fresher's ball was the biggest waste of money I've ever seen - It was exactly the same as any other night in the union except they have some rubbish live music.
If everyone is going out from your flat, you might want to go with them anyway, but don't expect it to be good.
Go out as much as you can in the first couple of weeks - talk to as many people as you can when you are out. It's so easy to make friends during Freshers, but if you try after this you'll just get some funny looks. Don't waste your time, get to know as many people as possible, or you will regret it.
The 'Second Hand Book Fair' is rubbish, they never have any books. Don't even bother.