I highly recommend using Garden Grocers. Being able to have items on hand in the room at our Disney resort for my 18 mo old son was wonderful! And being able to carry our own snacks into the park really saved $. Just an fyi, make sure to order early so that the time frame you need is available. It truly does make a difference!
As soon as I placed my order I received a phone call from a Garden Grocer representative asking me whether I had any questions etc. I was very impressed. When I arrived at the hotel in Orlando, I was advised that the delivery just arrived too - perfect timing! There is on one thing I would suggest to improve, I think you need to come to Canada.
I wouldn't go to Disney World again without using Garden grocer… It just put the finishing touch on a perfect vacation!