Our groceries have always been at our hotel ahead of time. Always nicely bagged and all items ordered checked. I especially like the personal phone call letting us know that our groceries have been delivered versus an automated call.
We used Garden Grocer on our last trip to Disney. We had a room with a full kitchen so we ordered some basics to have on hand for our daughter and to have for breakfast. Our order delivered before we arrived so bell service delivered it to our room. Overall we were satisfied - some of the pricing was really high plus the $14 delivery fee but it was still better than paying the "Disney prices"