When I was kid, I remember visiting Café Mickey with my mum and brother. It was one of the fondest memories I have of that trip. The food was good and the characters made the experience stand-out for all of us. I still have my autograph book somewhere
I personally enjoyed Annette's Diner very much. Although not Disney themed, the diner, which is located in the Disney Village was very enjoyable for all of us. Burgers, chips and ice cream - what more can anyone want. The staff were great too.
If you can afford to do so, I would recommend Buffalo Bill's Wild West Show. A dinner show that is fun for all the family. A very, very memorable meal.
There are many resturants, cafes and eateries to choose from, though the three I have mentioned were the ones that stood out most for me when I was a child. There are many more to find here: http://www.dlpguide.com/planning/dining/restaurant-menus/