Dam.
But most good things come to an end
Best Idea is simply have a Meet up for a ATC70 Ride on a certain date and time. Lots of folks camp in D and may bring their ATC70's just for that ride. Nothing wrong with everyone sitting at North Pole and admiring each others rides.
Pot Lucks happen too, all part of Duning, Camping.
T-Shirts, BBQ Vendor, Tropheys and Races are cool...but not needed.