Well, you will get differing opinions on this one, but especially because they are only 10, I can't imagine a better restaurant for a kid to enjoy than the Coral Reef in Epcot. It is always a highlight of all my trips to Disney and I would never miss it. I have never had a bad meal there. I order apps, cocktails, and a great fish entre and am always pleased as punch plus, most of all, the decor and atmosphere is out of this world with the massive fish tank in full view which houses large sea turtles and sharks and devil rays, ect.
I'm always surprised when I hear negative reviews of it. Maybe I am just easily pleased because I love seafood, I don't know, but the grilled octopus app plus the mahi mahi are always two of the best things I eat in Disney every vacation. I eat everywhere in Disney and very often, this meal is my favorite of the entire trip.
Just my experience, anyway.