On the website, it states that campgrounds are "First come First serve." So basically I can go to the campground with my stuff and get a site, if there are free space. I don't have to talk to anybody about where I should go, as long as there is a free spot I can go there and claim it for myself?
Exactly! When we go with our camper we circle around the lot looking for spots, if there are many open spots we go around a couple times to see which one we like most. We put the camper on it, set it up and then go pay the "Iron Ranger" (a self-pay system). I think the campground host gives you about an hour or so before they check to make sure you paid for the site.