Use glow sticks on your stroller at night... Any added touch to personalize your stroller is helpful, especially when the strollers are moved around while you are on the ride (the stroller parking in Fantasyland is always busy and the cast members constantly keep things organized to run smoothly).
Bring a "stadium cushion" to keep in your backpack or stroller. It is helpful while sitting on the ground waiting on the parade and various shows.
Try to come toward the end of the week, because most families hit the Magic Kingdom early in their Disney visit.
Ride a star attraction while a parade is going on if you're willing to miss it; lines ease considerably. (But be careful not to get stuck on the wrong side of the parade route when it starts, or you may never get across.)
At Town Square, near the entrance, pick up a Guide Map and the Times Guide, which lists show times, character greeting times, and any special hours for attractions and restaurants.
Book character meals early. Main Street, U.S.A.'s Crystal Palace Buffet has breakfast with Winnie the Pooh, Eeyore, Tigger, and Piglet 8–10:30 AM. (lunch and dinner are also offered) Lunch at Cinderella's Royal Table in Cinderella Castle is extremely popular—so much so that you should reserve your spot six months out. At an afternoon Wonderland Tea Party in the Grand Floridian Resort, you interact with Alice and help bake (and eat) cupcakes.