just before we were there at the beginning of the month, i checked out their offerings and prices. seemed limited and high. so i rented a fairly cheap vehicle for the week, saved the cab fares, etc and we stopped at a very large grocery store on the big main drag just outside downtown disney. for 25 we loaded up on bottled water, breakfast stuff, coffee and snacks. we were very pleased doing it this way.
by the way, we did use the car a couple of times to get to and from parks. from beach club it was faster than waiting for the bus