I'm normally a big proponent of the Boardwalk, but with Flying Fish and Jellyrolls closed I don't think there's much reason to go there at the moment. Of course, if you're going to have kids with you, you probably wouldn't be going to either of those places anyways.
I'd second the Polite Pig suggestion at Disney Springs. It's quick service so no reservation required, but it's a full meal with plenty of options and might be the best restaurant at DS regardless of QS/table service status.
Pizza Ponte is also a good choice if you just want to grab some pizza -- the menu on Disney's website makes it look like they only sell by the slice along with a couple of sandwiches, but when I was in there they had other sandwiches and types of pizza available plus you could order a full pizza. I think they must do several things weekly and the things on the Disney website are just the items they always have. Some people would tell you Blaze, but Pizza Ponte is much higher quality (plus you can get Blaze basically anywhere).
The only table service meal I've had at DS was at the Boathouse, and I wasn't impressed. The food wasn't great and it's quite expensive.