Do your friends know you are not drinking?
I went to my first boozy party after a month or two of sobriety and one of my friends who barely drinks was my buddy for the evening. We planned some nice mocktails to have together and left early together.
I would share your concerns with your friends before you go, see if anyone might be up for booking in some sober time with you. And maybe you just have to be prepared to do some stuff solo, skip some of the gatherings. Having early morning plans makes it easier!
That said, as has already been mentioned, if you’re really worried then you don’t have to go. There will be more trips!
Lots of good tips for surviving social situations sober here >>