We are not full timers, but will go off for 2-3 months at a time. We don't like hot weather so you wouldn't be finding us down south in the summer. We don't even have AC. We have a termastatically controlled Fanastic Fan. We open all the windows a couple inches with security bars to prevent windows from being open more by pets or strangers. We have solar panels and figure if the sun begins to hit the camper it will run the fan easily.
We have two cats, and no slide in our TC, even they take up a bit of room, especially in the bed at night. Also feed and water bowls need to go somewhere, and we're always stepping on them. Yours will probably be a bit bigger than ours!
Even cats are charged the pet fee inspite of the fact they never leave the camper. You may find those fees anywhere. It's costing us $2 a day extra to camp in Vermont state parks.
But it's great having them with us,
Sue