A couple of weeks ago my DW and I were backing in to our spot when a guy from a couple of sites over approached us. He tells us that our site didn't have full hook ups and was pretty much a tent site. After closer inspection we agreed that he was indeed correct. We then proceeded to call the office and get the site switched to one with full hook ups, which is what we paid for.
So in this case I appreciated this fellow coming over and helping out before we got too far!