The Disney World hotel food courts and some hotel gift shops have grab-and-go items like sandwiches, salads, pastries, cut fruit, juices, and milk. The rooms all have mini-refrigerators. You can save money by bringing cereal and disposable bowls to do breakfast in the room and you can just buy a pint of milk in the food court. If you need more grocery items, you can have Garden Grocer deliver them right to your resort; for more information see: https://www.buildabettermousetrip.com/gardengrocer