Do I have any ideas, Richard? Do I ever! It sounds as though you've got your character meals covered (which is important when you're traveling with three little girls!), so I'll focus elsewhere. Here are my suggestions:
Sci-Fi Dine-In Theater - My five-year-old son absolutely loves this place. Guests sit in parked "cars" and dine in front of a huge screen that shows clips of, you guessed it, sci-fi movies. The restaurant is dimly lit and provides a relaxing respite after a long day of park touring.
Whispering Canyon Cafe - Though on the LOUD side, this is one fun restaurant. The servers have lots of tricks up their sleeves to ensure that guests take part in the action, rather than just watch it. Your little ones might also enjoy the stick horse races through the dining room.
'Ohana - With a slightly more adventurous family-style menu, this restaurant appeals to kids and adults alike. Mom and Dad will appreciate the fire-roasted meats served table-side from skewers, while kiddos will have fun with the coconut races and conga lines that intermittently take place in the dining room.
Good luck with your decision!