I have to agree with HB1. Don't give up --keep looking!! Many book more sites than they need and cancel out . We have also gone to Garner and didn't have a reservation. Walked in and yes we have available spots for you! We did have other reservations somewhere else, just didn't care for the location. Ya kinda get spoiled once you go to Garner.
What do you guys think about Pedernales Falls for three days? We could take a day trip over to Longhorn Caverns. Since I couldn't get into Garner I began looking again. We still may try and get into Garner but I'd like opinions on other places as well for our return trip home.