Sunshine Seasons is a CS in the Land pav. They have Salmon, cheese flatbread and mac& cheese on the kids menu. And Grilled Salmon and shrimp stir-fry and cheese flatbread on the adult menu.
In world showcase La Cantina de San Angel the CS in Mexico they have cheese empanadas and fish tacos.
Regal Eagle at the American pav, has a power greens salad and sides of mac&cheese and baked beans.
My family loves Teppan Edo in Japan for a sit down and they have salmon, shrimp, scallops or tofu for the main dishes as options. I think Rose and Crown is a great option for the picky eater and the fish and chips are great! There's a Cs that sells fish and chips as well.