This is more about making friends then getting a chick.

Met some dude the other day and had a good chat. He invited me to go out for drinks tonight. I've never gone to drinks before. What's the etiquette like? How long do I stay and is it unusual if I don't get alcohol since I got work to do after?

TBH I don't wanna do this but I'm pretty sure that's the anxiety trying to find a way out.

Thanks!