Been there last year during out trip to Texas( mainly hiking in Britton park and a few other local trail spots and camped at Dodge City RV park)

Pros: good clean spots for camping, everything you might need is pretty close
Didn't try RV spots, but those looked really nice too.

Cons: Didn't find any.

If you gonna be visiting TX during June-July for trailing and camping - my advice is: make sure to get a pair of comfy shoes(my go-to are Brooks men's running shoes like those https://rununited.com/mens-footwear/) - trails are pretty rough and it's extremely hot and humid near bodies of water... Gotta dry your shoes every few hours