You are all so thoughtful to think of this. Every once in a while it IS brain surgery! Maybe the tarp/shirt/card thing doesn't have to be though.
I wonder if a tarp could be pinned up on the general store tent that faces the beer tent? That would be accessible to all- or the fence near where the map is at the main entrance? Would either work without making things difficult for PBG? If there was a cup placed there to accept sharpie donations it would help. I'd be happy to bring a few. Sharpies do work on both old and new tarps, just gave it a try on both.
Best idea yet. So whats up Planet Bluegrass people? If we suppy everything can you give us a spot?