I read about Garden Grocer in a Disney Planning Guide. The service was great; food was waiting for us at our Disney resort when we checked in. We saved both time and money by buying produce and breakfast from Garden Grocer rather than having a restaurant breakfast every morning. I would definitely use Garden Grocer on future vacations as long as the hotel had a refrigerator.
We stayed in the cabins at Fort Wilderness and wanted some essentials, breakfast supplies and a case of bottled water in our cabin. The groceries were brought to our cabin and put away-- couldn't be more convenient! Also was a great money saver for us. You can bring bottles of water to the parks with you, which we did every day.
highly recommended! great communicators.