a big drunk guy in the audience is effectively flirting with me...
Ha Ha, I'd actualy go and watch that.
I actualy have no idea, I guess just small restaurant sized groups. I did play at weddings once or twice, there's a few more people there. I don't think school concerts count, but if they do I've played in front of 50 -100 people regularly from the age of 10.
Talking about being eyeballed while you play, it can get a little trickey when there's no real boundary between audience and performer. Sometimes people can lean in real cloes to watch you play and it's a little disconcerting.