Most likely for you, due to the natural progression of people being more mature at uni, they will be less bitchy.
However I was not so lucky, I in Fresher's Week had the misfortune of meeting the worst person I have ever met, now the only person I hate in the world, and becoming her friend. And god, was she bitchy. So much it is all I'll ever remember when looking back on 2nd term of 1st year.
Everyone else was ok though.