I'm not sure this is any tighter than what we had. In the past the maximum you could use was from the middle of the parking row to the middle of the aisle, and that was if you didn't allow any aisle walk through space which some did but most allowed room for people to walk through without going through the tailgate. Remember that each tailgate will have their entire pad and the entire grass patch. Their neighbor to that side will be using the grass patch on the other side of their pad.Can't wait to hear the RV donors complain about how close the RV's are to each other... Those spots look tight
I think 55' x 14' is plenty of space. That is just the grass, not including the pad where your RV will be. And you won't have to allow any of that space for a walking aisle.