I graduated from Sul Ross State University in Alpine which is just North of Big Bend many years ago. My wife was raised in Alpine and is also a SRSU graduate. We went back last summer for the first time in many years. We were in the car and did not take our trailer but did check out one RV park in case we ever wanted to take the trailer to Alpine. That park was the Lost Alaskan and it seemed to be a nice park and a lot larger than we expected in such a small town. You may be interested in a RV park that is actually in Big Bend, but only noticed one the day we went to the park last summer and a lot of the spaces were small but not sure if there are other parks. Just my view here, I'd much rather stay in Alpine, Marfa or Ft. Davis than in the park. PM me and I'll give you my phone number if you would like to chat about the area, but have to admit I know very little about the park. Never went there in the four years I spent in Alpine as a student as I "studied' all the time.