Hello Kayla,
Decisions, decisions, decisions, what a magical dilemma to wonder which park to spend your second day at when visiting Walt Disney World. I think you should look into
Disney's Hollywood Studios and
Disney Animal Kingdom parks and decided which of these two best interests your princess.
At Disney's Hollywood Studios you will experience attractions and shows that are based around favorite movie and televisions shows that have delighted so many of all ages. Toy Story Midway Mania!, Muppet Vision 3-D and Honey I Shrunk the Kids Movie Set Adventure are just some of the fun attractions to look into for you and your family.
Disney Animal Kingdom is a safari journey like no other, the park is esthetically beautiful and truly is a journey to remember. Along with experiencing and seeing so many animals on your trek throw this adventurous day your princess will enjoy the rides at DinoLand U.S.A. and the ever so entertaining shows of Finding Nemo-The Musical and It's Tough to Be a Bug.
If you visit each parks page on the Walt Disney World website and click on "Attractions" and "Entertainment" you can then customize your visit by highlighting options such as "Age Interest", "Height" and "Interests." From here you can see which park may be your best choice for your family and do not forget to check out some to the dining options; both parks have some wonderfully entertaining choices.
I hope this has been helpful and may your stay at Walt Disney World be magical and memorable. If I can be of any further pixie dusted assistance feel free to ask.
Amy M*o*