We've used Garden Grocer for the last two visits to Disney World. It is especially helpful when traveling with an infant so you don't have to pack all their essentials. Also if you are not on the Disney Dinning Plan this is great to save $$ and eat in the room.
Terrific service! We saved money having water bottles, beer, and bagels (the basics!) delivered to our Disney hotel room. I will definitely use for every Disney trip.