I did this tour maybe 8-10 years ago. We did a mix of hotels & campgrounds as a LOT of campgrounds do not accept tents in Florida (it is a "winter home" for many RV people) and the hotels were sometimes about the same cost as an RV park. At that time, there was no formal policy. I "think" there is a policy now that says the Park Manager is to use reasonable effort to accommodate but that is basically a non-policy.
We only had an issue at one state park, I think it was Grayton Beach near the town of Seagrove Beach. They ultimately let us in but it took a 80-year old female rider to use the "age card" to get in.
Here is the updated route that we used. We used ACA's Florida Connector Route to get to Fort Meade, FL, then used our routes which prefer lower traffic roads when possible.
https://ridewithgps.com/collections/55066?privacy_code=HFgE35HJYtftsfKm Note about these routes: I have toured for 45+ years & 75k+ miles loaded touring and easily one of the Top 3 scariest times was when we were crossing the bridge from Tyndall Air Force Base (south of Panama City) to Panama
just as the base was letting out the soldiers at 4:30pm on a Friday. Imagine a ton of young guys excited to get to town for drinking and girls. It was not fun. I feel the issue was our timing, not the route. If we had finished prior to 4pm or started after 6pm we would have been fine. I don't know if it is like that every work day at rush hour but definitely avoid during the evening rush hour going into Panama City.
Another traffic issue is 12 mile stretch between Mary Ester and Navarre. Tons of 100km/hr traffic with little shoulder. Doable but definitely not fun. I am guessing we did it on Saturday early afternoon.
I absolutely recommend the stretch between Navarre & Pensacola Beach via FL-399. Great scenery. See pic. I have done this 3 times and each time had a great tailwind.
Be sure to check the status of the bridge closure between Pearlington & the Junction of US-90 & US-190. Bikes can supposedly get through but cars definitely can not.
Finally, do NOT use the US-90 Danziger Bridge to cross into New Orleans due to high traffic and no shoulder. You could use the pedestrian walkway but it is a bit tight on a bike with packs.
Hope you have a great tour! Tailwinds, John