This park is a popular weekend destination for people living in Austin and San Antonio for day use and overnight camping - so it gets busy. During the week the park has much more availability for camping. There are a limited number of reservable developed and primitive campsites. Try to make a reservation as early as possible if you plan to visit on a weekend. The developed campsites have water and electricity with restrooms nearby. The sites have varying coverage of trees and shade. The primitive campsites are located down a trail and are basically a cleared patch of land surrounded by trees. All of the campsites are within walking distance to the Pedernales River. However, the actual Pedernales Falls is about 2.5 miles away from the developed campground. I typically drive to see the falls. The falls is not what one might think of as a traditional waterfall. It is more like a river that has carved out a pathway through limestone rock. While this might not sound all that interesting, it is quite dramatic to actually walk along the riverbed and explore the falls up close. During the dry season or when there limited rain, it is possible to walk along the riverbed and explore the falls and all of its intricacies. During the rainy season or when there is heavy rain, the falls turns into a turbulent raging river and access is restricted. There are a few established hiking trails that wind through the trees and over the hills. There are some hidden water holes that are swimmable for the more adventurous. Be aware of snakes in the spring and summer.