The water taps at Hole-in-the-Wall Campground are still functional this morning
You never know when cold weather might cause water lines to freeze...
Hole-in-the-Wall is really scenic, flat and open, and framed by wild-West mesas and hills. However, it's the only RV-friendly campground in Mojave National Preserve, so it can be full of noisy campers during warmer months of the year.
I usually prefer the RV-unfriendly Mid Hills Campground seven miles up the road for this reason.