Dizzy Dolphin Delivery is similar to Garden Grocer in that they are a professional grocery delivery service, though in my experience cheaper than GG for most items [but still more expensive than
Amazon Prime Now or Instacart for most items], and will deliver to Bell Services and properly put things away there - including fridging and freezing items as needed.
Amazon Prime Now (which can shop from Amazon Prime Now and from Whole Foods) and
Instacart (which shops from Publix and a couple other stores) also both deliver via bell services.
I don't know if
Walmart grocery delivery is allowed to deliver to Disney resorts or not. Previously there apparently was a problem with the bags they were using and they refused to change the bags to what WDW considered acceptable so they got banned from dropping things with Bell Services. I don't know if that issue has since been resolved or not.