Have booked two more places so far...Manatee Lake State Park and Collier Seminole State Park, both for 2 nights each. Both due to sudden cancellations, I'm sure...I just happened to be online cruising the site when the two sites were re-posted...2 more minutes and I'm sure they would have been gone...anyway, thank you to those of you who recommended Reserve America, that's how I got these bookings. We are now down to booking just two more days, sadly, those are both in the middle of our stay, in between other bookings, and on a weekend. So no luck so far, and that includes a LOT of private RV parks. Raintree does have a couple of openings, but at $80 per night I've held off. Husband says truck stop is more attractive...LOL...
I also had the Camp Florida website recommended to me. Lots of parks that are not listed on Reserve America...