We've done CRT, Akershus, Garden Grill, Crystal Palace, Cape May, Chef Mickey's, Tusker House, Ohana and Liberty Tree (when it had characters, but it doesn't anymore.) We have three boys (ages pre-school to pre-teen.)
Garden Grill was our boys' favorite WDW restaurant and favorite character meal for years - it's our arrival night tradition and we all enjoy it. They continue to change the menu and there are some items we like better than others but we like the family style service (instead of buffet) the great character interaction and the food. If you go, I'd highly recommend requesting a booth on the lower level - it's a much better experience in the booths for us - we enjoy it more than the tables on the upper level.
But best overall character meals for us are Ohana and Tusker House breakfasts. (And I don't even usually like breakfast, so that means quite a lot!) We love them both and it's hard to really compare the two because they are so different. Ohana is very relaxed with a beautiful view of the lagoon and the character interaction is outstanding. The food is served family style, which makes it more relaxing than a buffet, but means less variety. I still prefer Ohana for overall atmosphere and food. The juice, pineapple bread and Mickey waffles are just a few of our favorites. (And I'm probably the only poster on the boards who feels this way, but I actually like the bacon at WDW.)
Tusker House is great fun and the buffet has amazing variety. We have very different tastes in our family of five and everyone was happy. The characters were energetic and the whole place s a lively and fun start to the day - 8am ADRs for a 9am AK park opening work very nicely!
Good luck with your decision and happy planning!
