Rio Grande Village campground (no hookups) is accommodating to all RV sizes, as is the Rio Grande Village hookup area. These campgrounds are close to trailheads to wonderful hikes, some short and easy, some more challenging. Great scenery from all of them. Chisos Basin is definitely worth driving to in your TV but definitely not with a long TT. In September it will likely be hot so you will probably want A/C so hookups will be necessary.