Hi Sara,
My family loves character meals, the food is normally good and the character interaction is fantastic. To view all the character dining options at Walt Disney World click
HERE then from the dining experience drop down box on the left choose character dining.
As you'll see there are many options so it really depends which characters are your childrens favourites. If your children like the Playhouse Disney characters then you should book a meal at Hollywood & Vine at the Hollywood Studios, it is a buffet breakfast or lunch with JoJo & Goliath from JoJo's Circus and June & Leo from the Little Einsteins. My families favourite is the Crystal Palace in the Magic Kingdom where you'll dine with Winnie the Pooh, Tigger, Piglet and Eeyore, you can choose breakfast, lunch or dinner here. Another great breakfast is held at 'Ohana at the Polynesian, you will see Mickey, Pluto, Lilo and Stitch here and the breakfast juice is delicious! Then there is the ever popular Chef Mickey's at the Contemporary Resort, this is another buffet with Mickey and often Minnie, Donald and Goofy. Characters are subject to change at all restaurants.
You can't go wrong with any of the character meals at Disney as they're all good but please make sure to call to make your reservations on 407-939-3463 up to 90 days in advance.
Have a great trip,
Jo