My caveat is that I don't do grocery delivery since I have a 2 1/2 hour drive to Disney so I shop at home and bring a lot of the stuff in a cooler - but the list of what I bring or buy when I get there is:
Bring: bacon (uncooked - I just prefer the taste and control over the texture when I make it myself), American cheese slices, butter, bread, chips, salt, pepper, coffee beans and grinder, coffee filters, sugar, sodas, iced teas, and waters, knife (none of the ones they provide can slice cold butter),tin foil, freezer bags (for leftovers). Sometimes I may include a bag of cookies.
Buy (I usually just use the
DVC stores even with their high prices because it's just more convenient): milk, eggs, possibly a dessert if I didn't bring any.
I pretty much just do breakfasts in the villa. If I had leftovers from a restaurant the night before, I may eat those for lunch if I'm doing a late start to the parks. Dinners I pretty much just do at restaurants. When I go to the parks for the day, I always bring a gallon freezer bag in a pocket or camera bag, folded up...especially when your room is really far from the ice machine, it lets me stop at the ice, fill up the bag, and head to my villa, where I can fill up the ice bucket. It may be lazy, but after wandering miles around the parks all day, then coming back to a long long hallway - the last thing I want to do is get to my room ready to relax and kick off the shoes, and realize I need to grab the ice bucket and walk down those long halls, elevators, or stairs to go to an ice machine, and back again. Especially at Boardwalk where the halls are long, Saratoga where all ice machines are on the first floor only, and OKW where the ice machines are way down at the bus stops or laundry rooms!