Hello Flaivia,
Congratulations on booking your upcoming Walt Disney World vacation! In my opinion, the very best Princess interaction with little ones under the age of 3 is to book a Character Dining Experience. Check out the following link for dining locations such as
Akershus Royal Banquet Hall in Epcot, Cinderella's Happily Ever After Dinner at 1900 Park Fare in Disney's Grand Floridian Resort & Spa, or Cinderella's Royal Table in Magic Kingdom!
I would recommend booking your Advanced Dining Reservations as soon as possible, as many guests book these popular spots as early as 180-days prior to arrival. You can do so by clicking the above link, or by calling Disney Dining directly at 407-WDW-DINE, 407-939-3463.
Also be sure to check out the brand new, majestically ornamental
Princess Fairytale Hall in Magic Kingdom, where your princess will have the chance to meet her favorite Disney Princesses for autographs and photos.
Please send me any follow up questions you might have, Flaivia. I'm happy to help you plan a perfectly magical trip to the Walt Disney World Resort!
Sherri