Red Rock Canyon State Park has dry camping only and water for drinking only, but there is a dump at the entrance.
The campground has 50 sites, and it’s the exception to find a level or long enough one for the average recreational vehicle. Site 13 is both, and right across from a pit toilet.
Thats the bad news. The good news is that the stars are spectacular at night, and the views are awesome. There are also nice area hikes for just about every level of hiker and some awesome photography.