"It never hurts to send guests to the store" I always try to send anyone who will not actively be involved with the sailing of the boat shopping, to the pool, lunch, bar... something during the checkout.

"captain did not want gallons and gallons tucked away all over the place"

This "captain" always buys and stashes one gallon of water per person somewhere on the boat. If we ever have a boat water supply problem. Here is your gallon until this gets sorted out. Otherwise whoever takes ownership of the galley gets to decide what will get stashed where. Never try to run the galley from the helm.