system
A chat on subreddit /r/NoStupidQuestions
human
Find an excuse to talk to the waiter or bartender or whoever is serving you away from your group, and just explain the situation: "Hey, I don't drink but the people I'm with make a big deal of it, could you please just serve me non-alcoholic drinks that look like they could be cocktails?  Thank you."
gpt
And you will find that the bartender will think even more of you than before (for whatever that is worth). He/she sees drunks all day and all night and having someone "normal" to interact with is a treat.