I've stayed at all you've listed. OKW does not have a sit down QS, they have a little walk up window with limited items. Poly has Captain Cooks, which isn't bad and most food courtish of the ones you have listed. BW has a little area set up in the bar where you can buy things like muffins and yogurt and there are a few tables there in the bar. They have the Boardwalk Bakery out on the BW, no seats inside but a few tables outside. All sorts of little nooks and crannies both inside and outside to take your things to and eat at though. YC/BC has the marketplace at BC that has a sort of hot meal, as others have said there is limited seating right outside, seating in the solorium which I've never seen full and some tables outside. YC has a set up similar to BW in the bar with kind of grab and go things like muffins and coffee and the tables in the bar.