Hi, Donna!
How exciting to have the opportunity to take your granddaughter to Magic Kingdom! I have a four year old daughter myself, and I can assure you Magic Kingdom will have her awe-struck and feeling like she stepped into a fairytale.
While on your visit, you can immerse her in the stories of her favorites princesses in
Magic Kingdom's New Fantasyland - the largest expansion in Magic Kingdom's history. With attractions like Ariel's Under the Sea Adventure, Enchanted Tales with Belle and Princess Fairytale Hall, you'll get to witness her inner-magic come alive. Even if she's not the princess type there are numerous attractions, character greetings, castle stage shows and dining options to have her begging for more.
In my opinion, four is a magical age for a trip to the Magic Kingdom! Please let me know if I can be of further assistance in helping you plan your day, Donna, as I'm in your shoes with a same-aged child.
It will be a day you both will remember!
Faith