probably not. the campground that i usually camp at is usually pretty layed back about extra people in campsites. Last trip down, we had 3 rigs and 6 people in on campsite, and they didnt give us any trouble.
which brings up another question for people:
who here has already made camping arrangements? and who still needs to do so? I will (hopefully) be getting a spot in the Canyonlands Campground, which is right in town on main street.