Hi Brooks! I am so excited you are planning on taking a Walt Disney World vacation with your little princess. Seeing the Disney magic through the eyes of a child is truly an experience you will never forget!
Any guest listed on your Walt Disney World Resort reservation will receive a complimentary MagicBand no matter what age they are. You will even be able to customize your little ones MagicBand with her name, and pick out a color. I think the pink MagicBand is perfectly suited for little princesses. Your daughter's MagicBand will even be able to open your guest room. I know my children always race to see who will be the first to the door each time we return to our room, just so they can open it with the cool new technology.
Brooks, since you are traveling with a young mouseketeer, I suggest you checkout Disney's
website for families traveling with preschoolers. It is filled with lot's of great information including the best attractions for your Disney Junior lovers, and sample daily itineraries.
If any other questions pop up as you are planning your Walt Disney World adventure, please let me know. I love to help out fellow Disney loving families.
Have a Magical Day,
~Jen