[Harp-L] Advice/tips for 1st blues jam?

[ian osborn]

Hey guys

Been on stage before as a guest player for a bunch of songs with my friends
who have a band, but I have never done the blues jam experience...
Especially one where I don't know anyone... But the bar is five minutes
away and I need as much practice as possible... So my question is any
advice or tips?? Other than "buy people a beer" or "help set up early and
stay late to clean up"
LOL