Ah geez..when I read the title of this thread, I actually shook my head and said "ahh fook" (insert real word).
Yes..you will undoubtedly have to be around alcohol. And for me, being around someone having a drink is NOT the same as being at a drunk up...when the event is pretty much revolved around FREE BEER wahoo wahoo.
Like what will you do exactly when people are standing round with their red solo cups talking gibberish? Laughing and stumbling in their alcohol induced haze?
They will be looking like their having a good time ya know? You wont see them later hurled over their toilets or passed out in their clothes...
I hate to say it...but your attitude wreaks of naive bluster.
Why do you even want to go?
I am not saying that you will definitely fail.
I attended a bar to see a band in early sobriety once..with a whole gang of longtime friends.
It was irritating. People were yelling in my ear and hanging all over me to keep from falling. I wasn't on the same wave length with anyone.
Nothing was fun about it. Even the guys in the band (whom I had known in highschool) were drunk..so they sucked too.
If you must go...just take it a little more seriously than your post suggests.
Make sure you have an exit strategy.
Seeing all those folks drinking and apparently having fun could be a trigger.
At least give that some consideration.