Sable Palms - I haven't camped here but took a drive through last summer. It seemed like a nice enough CG, but there were a lot of kids. I tolerate them when I hit the State Parks in the Keys, otherwise I'm semi-perm in an adult only community.
It's in Moore Haven/Palmdale area and an easy drive from Ft Myers area.
Sabal Palm RV Resort and Campground
I pass the M RV Resort every weekend and it looks nice enough. During season, it is packed but in the summer there appears to be plenty of availability.
Welcome to M RV Resort
I live in SE FL and`just adore camping in the South Central area, especially in the parks with huge live oak hammocks. We camp almost every weekend and love it!
I hope you can find something nice for the holiday weekend. We were lucky and found our "home camp" with relative ease. The owner lets us keep our TT on our site and doesn't charge storage. Everyone is like family and we have crazy fun. Good luck!