Seasonal Sites....do's and don'ts

Well we hit the lottery and secured a seasonal site now we can combine our two loves camping and boating for a reasonable cost. We plan on dropping off the 5th wheel next month. I know I need to unhook the water and shut off water heater before I go. We will be going probably every other week. Do we leave the fridge on, slides in/out, windows open/closed. I figure the stinky slinky shouldn't be left out as we had crows take out one before.Should I worry about any critters? Any help would be awesome?