I'd budget about 15-20 per QS meal. I also never get soda, always cup of water
looking at online menus: Satuli canteen-combo bowl: 17.49 plus tax.
Burger meals are cheaper: ex: Connections Cafe: 12.79 plus tax
Docking bay 7: chicken tip yip: 15.69, but I'd probably just get a Ronto wrap next door for my meal: 12.99 plus tax
if you plan on getting a dessert from time to time, add that in.
Snacks have gone up a bit, so about 7-10 each for those.
We never do breakfast in the parks, so just lunch and Dinner. we also bring a lot of snacks, for the backpacks and in room, but if we see a fun snack we want to try, we don't pass that up. especially at Epcot festivals.
I'd go through the online menus, and just add up a few places. If you know someone will likely want soda, add-ons, etc, factor that in