We have made that trip often and usually elect to stay overnight in Ozona at the Economy Inn and RV Park. It is certainly not upscale and is probably even a bit over priced for what you get but it is right on the freeway and has all the essentials. You park then walk over to the office and tell them where you parked and pay them.
Both retired. Travel with Nicky the Schnoodle. Son graduated and is teaching high school math. We still love our 2006 34' Allegro Bay XB and have 40,000+ miles on her.
We were just out to Davis Mtn state park. Looks like from Junction to Ft Stockton the oil field workers have moved in. The RV Parks looked full. We have never seen this many rigs in the campgrounds.
Ft Stockton has 7 RV parks. Most were full. Even the $10.00 overnight parks had moere RV's in than we have ever seen. Look like only a couple of sites. Looked like the new park up on the hill west of town have a few open sites. Not many.
Hope this helps in you dicision of where to overnight.