What is the best an least expensive way to buy food to prepare when renting a condo unit in Disney World Resort

There are a few grocery stores within a short uber ride.

Stores are all aroundso there's choices definitely

If your room has a fridge, uber to a nearby grocery store or Walmart. Also, the parks allow you to bring your own food in as well.

Find a publix

Grocery store there are a few in vacinity . Bring lots of snacks with you so u have what everyine likes