Really pleasant park
The park itself is tucked away into a canyon between two towering cliffs. There are shady campsites along the Pecos river, which was a little high when we visited in June, but otherwise might be nice to float down on a tube. In fact, some adventurous neighbors were floating--but I was one mom and had 6 kids with me (between my own and some friends). There are also some campsites higher up with a commanding view, but less shade.
There is fishing in the river, hiking up to the mesas with commanding views, geocaching, a playground, showers, relaxation, and it is only a short drive to Las Vegas, NM. The adobe picnic shelters were wonderful. No phone signals in the park, but hiking up to the mesa will catch you a decent number of bars (as joyfully discovered by my teen). The campsites are really spacious, and water is easily accessible. The group shelter and camping area was gorgeous. There is a small visitor center with really friendly and helpful park staff.
While this campsite is not particularly visited by bears, etc., please be advised to keep your food OUT OF your tent. The squirrels and chipmunks are particularly good at finding food and did cut a hole through our neighbors tent to get to it! Likewise, unattended food at the campsite will be carried away by our four legged critters with super fluffy tails.