Do you want a full TS dinner or a more budget-friendly CS meal? The resort CS locations are pretty good, and by 5:30 pm all of them offer expanded menus with substantial dinner entrees. AoA food court is brand-new and appears to have some pretty unique offerings, or walk across the bridge and check out Pop. A number of the resort CS locations have build-your-own pastas and salad bars, too.
For TS locations, have you ever been to AKL? Boma is a unique buffet and you could also take some time to explore the resort and go outside to their animal viewing savannahs. In the evening there are storytellers at the fire pit; check with the resort for times. Or perhaps the kids would enjoy dinner at Trails End at Ft. Wilderness followed by the free campfire sing-a-long and marshmallow roast (bring your own; they sell 'smores kits but it's like $8 each) with Chip and Dale, and then a free outdoors Disney movie.