No they do not. You have to buy everything. There are menu's displayed as you walk from country to country so you can easily see what they have. Epcot and Animal Kingdom have an offer that you can buy a $50 dining type gift card and they give you $10 free. We used that to buy small food snacks from the countries we were interested in.
The various festivals will offer expanded choices of food and drink when they run as well. But it all costs.
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