I was homeless in Florida for 10 days, living in a Palmetto leaf hut I built in the woods. this wasn’t even that far south as you were, I was up north of Tampa. Most nights i couldn’t even fall asleep till after midnight because it was too humid and hot. I kept mostly dried and canned foods. Stuff like bread and crackers I buried in the ground near a creek in a plastic container.
I had a hut similar to this but smaller, not as tall, and rounded on top…