At the risk of sounding controversial I am tempted to say 'When in Rome, do as the Romans do!' I know many people who are first years actually want to do well and go to bed at a reasonable hour, but frankly in many ways living in Halls and expecting to be able to have silence and peace every night is like booking a holiday to Magaluf for the 'peace and quiet.' OP - you have the rest of your life to go to bed at a reasonable hour, I would say go and join the party as you might regret not being a part of that once you get older! ( I didn't as I struggled socially - I lived on a corridor of 32 (!) students (might be a record I don't know) , I generally went to bed at 10/11pm and frankly just got used to the noise and it never really woke me up particularly)
Get a louder alarm and catch up on the sleep when you don't have 9am lectures/at weekends. Or try sleeping late afternoon/ early evening for an hour or two - I know many people in my Halls did that when I went to Uni.
If youre really not up for partying, it depends on the uni how seriously you would be taken. York for instance has notices everywhere telling students not to make noise after 11:30pm (but then much social life is college bar based and academically it is a challenging uni.) While frankly in some other unis trying to get security to tell people off for noise might be tantamount to expecting people to have an early night whilst on holiday in Ibiza.