MK: Honestly, CRT dinner is the only place I would consider above avg. for a full meal at dinner. Plaza Restaurant is very good for what they sell, if you don't mind sandwiches for dinner. We don't mind Tony's for a lunch spot, but I wouldn't waste a dinner on it. LTT dinner is very similar to Cracker Barrel, except there's no menu to choose from. If you really like CB, you'll like LTT.
AK: Yak & Yeti. If that type of food doesn't appeal to your group, try Rainforest Cafe.
DHS: You have it covered. If you need a 2nd meal there, Hollywood Brown Derby is the best restaurant in the park by far. Since you're not using
DDP, you could order as much or as little as you like. Although it's a signature restaurant, it's very kid friendly. I don't think your kids could possible be worse than some of the kids I've seen there.

At least you care about their behavior in nice restaurants, which says a lot about your parenting skills. Kudos to you.
Epcot: I see you have Teppan Edo. If you're looking for another Epcot restaurant, Les Chefs de France would be our first choice of the non-signature restaurants based on food alone. It has a bustling atmosphere. San Angel Inn has an outstanding atmosphere & the food is pretty good for authentic Mexican. It's not Tex-Mex. It is very dark in there, if anyone in your party has a hard time seeing. Tutto Italia is pretty good, but we don't feel it's worth the OOP prices. We'd rather add a little $ to what we would have paid there & have a signature meal. If everyone in your party likes pizza, you should try Via Napoli. It's very reasonable for a Disney restaurant.
DTD: We like House of Blues, but it can get very loud in there. If that doesn't bother you, we think the food is worth the trip. We actually prefer the food over Raglan Road, but I always recommend going with your first choice.
It would help to know which hotel you're staying in. That would help with restaurant suggestions in the area.