If it were me... (don't know the specifics about your weather...)
- Bring all slides in any time I am not there ... only to minimize exposure to the roofs/slide toppers.
- Depending on the moisture levels expected - leave a window or two open a crack.
- If not returning for a couple of weeks I would shut down the fridge. (If power goes out the fridge will switch over to propane - I don't trust these absorption fridges for too long without supervision.)
- If it is a high humidity environment maybe a dehumidifier.
just my thoughts and opinions...