We stayed here in one of the hookup sites because we needed a/c, it was hot even in October. All sites are FCFS but we found a spot on a Saturday in early October at 1030am.

The fee system feels a little confusing but it's basically $15 park entrance fee, $10 more dollars to camp, and another $10 for hookups (50&30&20 power and water only, free dump and water (and garbage bins) just outside the campground even if you aren't camping). So $35 for a night for non residents if you want power. Nevada residents are something like $5 cheaper. All sites appeared to have water, even the non power sites.

Showers are free but pretty yech, but what are you going to do. Beats an RV shower.

Garbage bins throughout, but no recycling. Verizon had ok service, kind of spotty, but decent with the cell booster. Att was pretty much non existent and the booster didn't help. WiFi is available for purchase with varying plans.

Valley of Fire is an incredible park. We explored the park a little in the morning before we left. We left the park at 10:30am and the guy at the booth checked our receipt upon exiting. Campground checkout is 11am. I think it's possible that if we'd left after 11 we'd have had to pay another $15 daily park fee.