FYI if you are shipping a package (even to yourself) to a resort with an attached convention center, Disney will charge you a small fee to retrieve the package. No convention center, package pickup is free.
What the PP was referring to is Bell Services. And they will also keep the part of your grocery order refrigerated and part of it frozen as the items dictate. Really an awesome service. They can even receive your grocery delivery the afternoon before you arrive and store it, if you are getting in on a major holiday when the delivery services are closed. We did this on New Years Day 2014.