This is a first come/first serve campground. On a Thursday, I saw what was probably the last spot, fill up by 4:30PM. The BLM number on the website is great for quick pre recorded info. As of 6/11, the dirt road that treks miles up the mountain is still nowhere near finished. The trail and campground was packed with local and international travelers.  The hike to the falls is rocky but not too long. The views from the campground are huge and vast. Wind in the Valley is pretty consistently 20+mph from March through May. But it keeps the mosquitos away! And usually the wind calms at sunset. I would stay here again for a 1-2 night trip.