Actually, I do have a suggestion on the car... tow your car, don't rely on a rental.
I made a reservation months before I left for Florida last time. Despite having the confirmation, I got down there and was told that there were no cars for me. Apparently, the reservation meant nothing. Spent my first 2 days down there without a car and the grocery store a 40 minute or so walk away (once I had the RV hooked up, I didn't want to move it). No sight seeing for those 2 days. Pretty sure they only got on it when I sent a message to the Enterprise website with a pretty harshly worded complaint.