Hi Maria,
Character dining is an event in and of itself! It is one of my most favourite things to do! To have the personal, one on one interaction with the characters is pure magic!
Your little princess will be talking about it for months!!
For a first time experience, Chef Mickey's is a fun dining experience!! Even your 10mth old will light up when Mickey Mouse comes to your table!!
The Crystal Palace at the Magic Kingdom is also a great spot. Winnie the Pooh and friends come to visit you while you are eating.
I am sure your little princess would love to dine with the princesses, which is an option.
There are so many options,
HERE is the link to character dining. Decide on the characters you would like to dine with and then see about reservations.
For visiting the parks, the Magic Kingdom first and foremost!! You could do 2 days there easily! The second park I would suggest would be either Disney's Hollywood Studios or Disney's Animal Kingdom. I listed both because if your little ones are really interested in animals then Disney's Animal Kingdom would be a great choice. At Disney's Hollywood Studios, you will find some of your favourite Disney Junior characters, as well as some fun attractions and shows.
You and your family will have a fantastic time.
Make sure you bring your camera and autograph book!!!
Carrie