Another thumbs up for garden grocer. We use them every trip.
Without having to cook on vacation, we usually get bread, cheese, lunch meat, and PB+J, and make sandwiches. Saves us enough money over Disney quick service prices that it makes me feel a lot less guilty about paying for a daily table service meal.
Also, (if it is your thing) garden grocer will deliver beer or wine, at a price that is significantly cheaper than purchasing at a park or your resort. It's pretty nice to have a glass of Chardonnay on the balcony after a long day at the parks...