Things that worked well for us...
Garden Grocer!
Packing items it didn't make sense to buy from garden grocer (GOOD coffee, filters, a couple other small things).
Sending special trip coffee mugs ahead. The ones in the cabin are TINY! And I like a big cup for coffee. More than one.
Pop up hamper
Hanging toiletry sorter. With 6 of us, it was nice however the bathroom is surprisingly roomy!
I agree on using the tops of the cabinets on both sides of the murphy bed for luggage.
There are not any cookie sheets in the kitchen, a problem for making biscuits or cinnamon rolls (or pizza). Workarounds were available though.
We didn't have a car for most of our trip, or a golf cart and it was fine. I think it really really depends on the ages of your group. However, without a car or cart I'd request a cabin at the front, or end of the loop as to be close to the internal bus stop. It worked wonderfully for us!