Unless you are very particular on your brand, your hotel sells milk and yogurt and fruit. They have bagels, cream cheese, etc. The prices are higher than APN but not that much and with a small order once you factor in APN's delivery fee the difference may even out.
This is the grocery order form for BW DVC. While you can't use it at BWI, it gives you a good idea of what to expect in the hotel's store in terms of products, brands, and prices. If they are out of something, it is an easy walk to Beach Club's store or you place an APN order once you know exactly what you need.
https://disneyvacationclub.disney.g...anning/groceryorder/bw-groceryform-020119.pdf