That’s a great question! I feel like since Sylvalon has so much produce they would have some great restaurants too. Not fast-food, but sit-down places. I suppose a lot of the farmers there would either eat their own extra produce or sell it to restaurants so they can eat there. The rest of the produce would go to Dandnar for trade or be stolen by pirates.
In Dandnar, the people would only have grain fields and small meat farms, so the imported crops would be sold at kiosks and food stands where the families would eat mostly at home.
Tük’an is a poorer region, so they have to make do with whatever they can fish from their coasts and icy lakes, and ration the crops their pirates steal and return home.