They don't have to be open much. My slide comes in so that the fridge almost touches the island but I can open the doors just a crack. Enough to let air in. I can't imagine it being so tight against the island otherwise you would get wear on the fascia.
Pull-Rite 16K Super 5th
2014 Rockwood Signature Ultra-Lite 8289WS
2011 Chevy 2500HD - DuraMax (Just over 5000 miles now!)
Nights camped in 2014 - 21