Hi Tina! We used Disney's grocery order system for our trip in Mid-December at OKW. I faxed the order form the day before we got there, and the food was in our room when we checked in. We didn't order much - about $15 worth - but we didn't have a car, so we didn't have the option of driving anywhere, and it was during the time that wegoshop.com was getting some questionable reviews.
I did have a couple of problems with the delivery: they put our bananas in the fridge for some reason (so they were already browning when we got to the room), and they didn't deliver the bread we ordered (nor did they charge for it). However, I would use them again if we only needed a few things.