Aha! I guess my "the other guy" comment was a bit of a false assumption, my apologies.
I live just around the other side of that little shopping area - had stopped to grab some groceries on my way out and noticed the shiny blue S across the parked row. It's really interesting how quickly we seem to develop a sort of radar for other Tesla vehicles once there's one sitting in the driveway.
Alas I won't be there - it filled up before I got a spot. Sounds like a good weekend though, definitely going to try to get to the 2014 one. Haven't heard about the coffee morning though, I'll look for more info.