I adore Blue Bayou for lunch. There is something about it suddenly being a moonlit night when outside the sun is beating down on you. I had lunch here on my 43rd birthday and it was the perfect way to celebrate.
I am going to try Carthay Circle Restaurant in California Adventure for the first time on April 1st. (Providing we can get reservations!) It might be too fancy for your traveling party considering the ages of your kids.
At the Grand, Storytellers is great for both breakfast and dinner. I had an egg white, fresh basil, and plum tomato omelet that was heavenly. And I don't know where they get their grapes, but I can NEVER get grapes as good as those in my market.
In Downtown Disney, we always wind up at Rainforest Cafe because it entertains my kid while we can try to relax. The salads are actually pretty darn good. The last time we went there, we were early for our reservation so we sat at the bar. My daughter ordered a chocolate milk, and the bartender took out a shaker, poured milk in it, then chocolate syrup, and shook it! I thought that was awesome.
It sounds like you've already got your character meals taken care of, but we always love Goofy's Kitchen for dinner and the PCH Grill for breakfast. (We usually book the last seating of the day and call it lunch.)