Eric W.
Yelp
So Alison L.'s review has a two small errors, 1) It is not ALL first come first serve. In fact, it is mostly NOT first come, first serve, which means a reservation is highly recommend. Since we did not have a reservation, IDK where that it is done, but a little online sleuthing should get you started.
If you don't have a reservation, there are a few campsites that cannot be reserved and must be claimed in person. If you find yourself in his situation, there is (at least on our visit) a camp host who knows which sites are available. There may still be a bit of "racing", but you should do OK.
Pick your site and leave something in the site to mark it as "claimed", fill out your envelope, put cash in envelope, and drop envelope in box at campground entrance. If you don't have the cash, or exact change, you can pay by credit card at the Chisos Basin Visitor Center a short distance up the road.
If you pay by credit card at the visitors center, you'll probably discover the camp store on your own. But if you brought exact change, I just thought I'd mention the many amentias up the road, including a restaurant and bar.
2) Second error is not all campsites have a "cover." Some do, but not all. All sites do have a picnic table, grill, and bear box. The bear box is quite big, and be sure to put all your food and cooking supplies in it. If you are camping, don't forget your soap and toothpaste. Some critters, i.e. the javelinas, like the smell of this stuff too. Or they just may be curious abut the sweet smells, and your tent is not going to stop them. As an FYI, we did not see any bears or javelinas, or signs of any, in March... But that doesn't mean they are not there.
Another nice thing about this campground, there is a "no generators" area. Now I do think there is a curfew on generators, but if you are camping in a tent, you may want to think about this.
One last thing worth pointing out - No open fires. Charcoal is OK, hence the grill. But don't expect to have a campfire here. Just too much of a danger.
Lastly, check the bulletin board for any programs going on in the area. There's an amphitheater, with overflow parking for the campground, opposite the campground entrance. When we were here, we saw a presentation on ravens, which can be seen in the park. In fact we saw some the next day, and had a greater appreciation for these birds.
Bottom line: We were there in March, and it was quite cold a night, so be sure to bring something warm. A campfire would have been nice.