If you are staying in a family suite at the Art of Animation there is not a grocery store (some of the value resorts have a small grocery store). The Garden Grocer is a perfect for grocery shopping for whatever you need in the kitchenette. Garden Grocer allows you to order before your trip and deliver your groceries when you arrive to your hotel.
If you're wanting to save some cash while in WDW by cooking your own food, this is the way to go. Easy to set up and easy to get delivered to your room - all you have to do is show up and cook.
Garden Grocer was attentive and prompt. Items were delivered to our hotel and a call was made to let us know -- they are very concerned with customer service and it shows!