I don't know what you could do better!
We have been to Disney World many times but this is the first time we tried Garden Grocer and we were very impressed. It sure beats trying to squeeze in a trip to a store to pick up the few items we always seem to need.
This is a wonderful service. I used when traveling down to disney from NY. I ordered snacks and drinks for my 3 yr old so we had stuff in our hotel and drinks to bring to the parks. Everything was delivered to our hotel room and was waiting for us when we checked in. Very convienant and much appreciated!