av8rds i had it in the back of my mind that it was you, those flags looked familiar! We only spent Friday night out that far, as my niece has made friends with some kids who camp around trail two. K Mac, the beach is always very busy, I don't think a few like minded forum members will hurt anything. They sell the Off Road Vehicle passes at the gate house. Here is all the info they have about it.
http://www.town.barnstable.ma.us/SandyNeckPark/ORVBeach/orvhome.aspx