That looks like fun! It would be neat to just sit down with other folks, you might not even know them, and have a jam session. I never got to experience that as a pianist. Pianos are a b*^&h to lug around. I need to get back to my piano. I have let off significantly since my teacher died.Had a great time at the fiddlers convention today.
I think you've mentioned it before, but I have forgotten, what instrument(s) do you play? Is that you with the "I'm having fun" grin in the last pic?