From May - Oct we keep ours plugged in, refer on (there's usually food in it), and slide out. Can't see taking everything out of fridge only to have to put it back in in a week or so when we go again, then again we're going every 2-3 weekends all summer long. If you're a constant camper all summer there's nothing wrong with what you're going. There are no moving parts in the fridge to wear out leavging it on all summer.
2012 Winnebago "Journey To Insanity" 40U
2008 Dakota Sport 4x4
2004 Subaru Baja - DW's
2006 Honda Shadow Aero - TOAD for now.