Characters are so much fun with kids! Akershus if great if you have a child who loves princesses, garden grill has a unique setting and fun characters, cape may cafe's breakfast is really delicious (also the restaurant is not too enormous).
We did not love Crystal Palace, it was very crowded, a long walk to the buffet, and we thought it had worse food than the other places. Though my Pooh-loving child thought it was amazing.
It's been awhile since we've been to Tusker House, but I think that one was pretty good, too.
My kids love to eat and are pretty adventurous. Food-wise, I think Boma was their favorite. We love buffets with kids. They could always find something they liked... one meal my oldest ate plate after plate of shrimp, and my youngest ate his weight in blueberries. However, if multiple kids are not old enough to get their own food it's a lot of work to keep getting new plates for them.