You seem smart and literate. I bet you don't really have a problem making real friends.
Go into it with the attitude that you ARE going to have a wonderful time, no matter what. And I bet you that you will!
I remember in school there was a girl named Samantha. She had a HUGE brown birthmark down the front of her face. It looked like Italy. There was NO way to hide this, no makeup worked, nothing. After knowing her for a few weeks, I didn't even notice it. Simply, I think, because she never made an issue of it. It just was what it was.
Spring is coming. Get out some short shorts and go!!