I agree with Oldbears. You are best going to the Keys with reservations. Please do not take your RV into Key West itself. Camping is located on the key prior to Key West and the roads are tight and crowded. Also, you will not find any parking for an RV in Key West. We stayed at Boyds Campground, which was fine. We stayed at Grassy Key RV resort on Marathon Key, which was absolutely beautiful. There are many private and state park options. I would get on the phone and/or the internet and get working to string 10 days of reservations together, if you can.
2010 Ford F-150 Crew Cab
2015 Salem Hemisphere 263RL