We found a campground about 1 hour outside the park in Williams. A KOA campground with full hookups. After dinner, we headed over to the swimming pool and showers, but the pool was already closed, even though the sign said it should be open for another hour. OK then, just a shower. Chris and I both had lots of people banging on the doors while we were showering. There was a third restroom/shower right there, and there were others in the campground not that far away. Weird. (Grand Canyon Williams KOA Campground, $51/night)