https://www.moabrimcampark.com/rv-sites.htm Is where we stayed last year. I kind of put all of them on the wall and threw darts and hit this one.
It is nothing spectacular. Average sites, very clean, most have plenty of room for toad parking. We ended up with the one of the few that didn't have sewer but I knew that when I made reservations. Sits up on a little hill above the road, traffic noise during the day but no big deal for us. Besides, we were out during the day and the night traffic is light.
The managers are great, he is a kick to BS with with a interesting background.
Hit the Moab Dinner in downtown. Usual hamburgers and stuff with a surprisingly large menu. Decent prices. Also the Moab Brewery on the south end of town. Came recommended but for some reason didn't make it. Moab Grill is another decent place that won't break the bank. Decent steak. Ate their 18 years ago and we had to try it again. Wasn't disappointed.
The Maverick station at the south end of town handy place for fuel. Separate large vehicle pumps and you can go around the station to enter/exit.
Canyonlands NP is nice, Entrance to it is north of Arches 15 (?) miles. Better views than most of Grand Canyon IMO.
Hope that you are going to hit Bryce Canyon. I would go back there in a heartbeat.