Your time frame is in the midst of the Florida snow bird season, and sites are either booked solid, or extremely expensive or both. Sites where we are at in Ft Myers rent for triple the off season rates right now just as a point of reference. The further from the coasts you are, and the more north you are the more likely you will find openings. Cant hurt though to call and check for cancellations. They do happen. Most folks that book the coasts for this time of year did it a year or more ago. With that said, hurricane Ian totally screwed up the RV season here and there may be cancellations available to pick up a deal on, but expect to pay outrageous rates at this time of year. Sorry to be the bearer of not so good news, but I like to go in eyes wide open. Good luck with the search.