I am planning on camping in Chisos Basin the week between Christmas and New Year's with a few friends. I didn't realize sites were reservable there (it's been a few years) and so I just went on the NPS site and realize that hey, they are, and hey, they're full.
My question is, how early do I need to arrive on 12/26 to get a first come first serve campsite there for the week? It's a 9 hour drive there for me, but if I need to leave and drive overnight I will. I really want to camp at Chisos (lots of good memories).
Any guesses? I'm guessing if we leave at 8a and don't get in until 6p they will all be gone - I think there are only around 30 of them for first come first serve?