We took a flight from Toronto to Orlando with our 3 young kids. All of our pre-ordered groceries arrived at our WDW hotel at the set time. The groceries were kept cold at the hotel desk until we were ready for the concierge to bring them to our suite. Items were well packed and in excellent condition. Best of all, we had ordered diapers and wipes (it was great not to have to fly with these items because they take up space in suitcases and are heavy).
It was great to arrive at to our resort room and have our groceries delivered right to our door.
Very helpful answering questions, and everything was great!