Gulf Coast

We have stayed at East Bank and it's nice.
Salt Springs is very busy this time of year and it's pretty far south.
check www.recreation.gov and type in a state and select view as map. That should help. Come on down to FL the weather's great!!

Fort Pickens Campground of the Gulf Islands National Seashore is just off Pensacola. 50Amp sites are $26 per day - $13 with the Senior Pass. There is apparently an additional $8 per week vehicle access fee.

Davis Bayou Campground of the Gulf Islands National Seashore is located near Ocean Springs, MS - just across the bay from Biloxi. It is a first come/ first served campground for $22 per day / $11 senior pass.

Isaac Creek is a COE site on the Alabama River Lakes about an hour north of Mobile. 50Amp sites are $18 per day - $9 with the Senior Pass.

Eastbank on Lake Seminole Georgia is a COE site just north of Chattahoochee, FL. 50Amp sites are $22 per day - $11 with the Senior Pass.

Down into Florida there is the Salt Springs Campground in the Ocala National Forest, the three COE campgrounds on the cross Florida ICW Canal and the various campgrounds in the Everglades NP.

I haven't camped in any of these - but the COE sites look really good to me.