If it's anything like the one's we at NCCX participated in at Half Moon Bay, CA, we basically volunteered to help run the event. Direct traffic, hand out water/sports drink, general stuff like that.

I don't know if they're having the "Xterra" contest for the trucks though. I won "Best of Show" last year. Must have been the bike racks and 38 lights I had all over my truck.