Well, dont know if you will read this before you go, but we were at the Dunes a couple years ago and there is a hot springs North of the Dunes & East of the highway. Dont have my map book here so cant give the name, but if I remember right, it is not a far drive. Also, there is an alligator farm up that way. We ended up spending all our time at the Dunes because our youngest son (12 at the time) loved running around w/the dog. We went in the Spring, so weather wasn't hot. There are some nice hiking areas (away from the Dunes) also. We stayed at the campground right at the Dunes. It was nice, altho spaces are close together and I think it can get crowded. Make sure you have that skeeter repellent too!! Hope this helps.