I'm going to look for venues this week. If Robot Speak isn't an option then another possibility is renting a rehearsal room at Guitar Center, or there's a few art galleries here in Oakland that are muso-friendly. I'm thinking about bringing my OT or A4, possibly both.
As for what's involved, I'm thinking a mix of sharing tricks and tips, performance or jam session if people are into that, and a social dimension, which may involve