We live in Orlando and keep our coach in the drive, plugged in and the AC on year round. Probably not feasible in your case, but it sure is nice to not have to worry about it. I can tell you to make sure you don't have any limbs or vines touching it at any point and to protect the cords if you do have it plugged in. Ants WILL get inside regardless if there is path for them. Also, be very careful when you get into the battery compartment at the end of the summer as the fire ants just love to nest in the areas around the warm batteries (assuming they have a trickle charge to keep them up). The UV here will kill you worse than the heat, but I would still heed what some of the others have said about keeping air flowing through the coach if at all possible. IMHO, fresh flowing humid air is much better than hot stagnant humid air.
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!