We flew to Disney World from Virginia. Knowing that our dining plan didn't include breakfast, that snacks were so expensive in the parks, and that we would need lots of water, I ordered a few things to have in the room. I got a confirmation call when I ordered and another that my groceries had arrived. They got to Disney before we did and were held for us. The order was perfect! I'll definitely use this service again.
Second time we've used them for our Disney trip. Such a great service, I would recommend to anyone going on vacation, Vacation isn't for grocery shopping, it's for fun!
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.