Garden Grocer was fantastic. Not having a rental car while at WDW, it gave us the ability to have breakfast and snacks in our room as well as some beers to kick up with around the pool after a long day at the park. I'm so glad I read about them in my WDW unofficial guide book!
This was my first time going to WDW with kids (9,9, and 7 years old). Figured eating breakfast in the room would save money and time. Found out about Garden Grocer through Touringplans.com and read all the awesome reviews. I looked into doing Amazon but chose Garden Grocer because they specialize in WDW. We got some milk, OJ, bottled water, and snacks for in the parks. The service was superb. I had ordered some peanut butter crackers but they were out of. I received a call the day before our arrival (and delivery) to tell me. Everything was super convenient with decent prices. I highly recommend this service!