Hello Patrice and welcome to planDisney where it's our pleasure to assist with your plans to visit the magic and wonder of 
Walt Disney World Resort.
Let me tell you, my family is all about the food!  So having the super convenience of being able to pre-order a delivery of groceries direct to our Disney Resort hotel from a company like the Garden Grocer has been an absolute gem for my family.  I'm happy to share with you that I've successfully ordered multiple times from their service, and would do so again in the future.
A simple 
Google search for 
Garden Grocer - Orlando will provide all the information required for you to research this independent company and place an order if you so wish.  Bell Services or Luggage Assistance at each 
Disney Resort hotel can accept 
Mail or grocery deliveries on your behalf, and for a small fee, will even arrange to have it delivered directly to your Resort room. 
Lucky Guests who are staying within one of the rustic home-away-from-home-sweet-home 
Cabins at Disney's Fort Wilderness Resort are able to stock up on a wide variety of provisions by pre-ordering their grocery delivery via this 
Online Form which can be emailed, faxed, or even mailed to the addresses found within this
 link.  
Additionally, Patrice, you will find that each 
Disney Resort hotel benefits from a well stocked merchandise store that carries a selection of everyday grocery items such as bread, milk, and select household sundries.  Either way, you really won't go hungry whilst vacationing this coming 
Spring at Walt Disney World Resort!
Have a great Disney day ~ Jane