This campground fills up extremely fast, even on a Thursday when we went. The sites are pretty small, tent or car camping is all you'll be able to fit. We did see some larger rigs near the trailhead entrance, but not sure if this is technically allowed. There was a campsite host that arrived sometime around 7:30 who could probably give more information. Bathrooms, water, and a picnic area. The spots themselves, though small, were fine, generally nothing special but did the job!
If you're able to get a spot here, its worth it - the parking lot for the trail can fill up by 8am, and the best time for this hike is to start as early as you can.
As you start the hike, be sure to get one of the trail guides and look for the wooden posts with the numbers! Lots of cool things to look at including pictographs and granaries.