Hi Michelle!
Having dinner at Chef Mickey's is a wonderful plan for your little Mickey fan. The Magic Kingdom is actually my favorite park to visit with little ones. With the recent expansion of New Fantasyland, the Magic Kingdom has more to offer than ever before.
Some of my favorite Fantasyland attractions to enjoy with my children are the classics like Peter Pan's Flight and Dumbo the Flying Elephant. My children also really enjoy Mickey's PhilharMagic. I think my two-year-old asked to "go see Mickey and Donald play music" at least three times during our last visit.
If you will be visiting the park throughout the day, look for Mickey and Minnie in a hot-air balloon float in the Disney Festival of Fantasy Parade. The parade happens daily at 3:00 p.m. and is a favorite among Guests of all ages. As you stroll down Main Street, U.S.A., be sure to take time to meet Mickey Mouse at Town Square Theater. Your daughter will be thrilled to get a hug from Mickey and hear him share some of his favorite magic tricks.
For more advice, visit the Planning for Pre-School Kids & Little Ones page on DisneyWorld.com. Here you can discover tips and special offers designed for families with little ones. There is also a Preschool Parent's Guide to Walt Disney World Resort that you can download. If you have any other follow-up questions, please let me know.
Have a magical day!
Bob