We use the plastic boxes on wheels - 3 across the back of the camper and accessible when the kitchen is open: "Safeway"; Kitchen; and "San Remo" (should now be BWS...or similar) which also contains spare toiletries/tissues/etc etc; The fold up chairs, tables and fridge stand all fit on top of these boxes when the camper is packed. The porta pottie, washing bucket full of things like pegs, washing powder and toilet chemicals are accessible through the side hatch. Things like the annex, annex poles, spare tarp annex flooring require the camper to be opened which is only twice per stay - when we get there and when we are packing up. Clothes bags, wet gear (rain jackets), boot bag and fridge are all in the back of the Patrol. We have "precious boxes" for each of us...any medications, personal items on the floor behind the front seats.
Works for us.