Hello Yuniati, and welcome to planDisney!
The smiles and the overall joy your 5-year-old will have makes me excited for the memories you are about to create. Even experiencing the magic for one day is special, if you ask me. A good theme park to consider, based on your desires, would be to visit
Magic Kingdom Park.
Because your little princess loves the princesses, I think that your best bet to see and meet them would be for you to visit one of the available princesses at
Princess Fairytale Hall at Magic Kingdom Park. Though the interactions are modified, she will still get to talk and even take a selfie with them.
Add some "princess(y)" themed attractions to your plans for the day. The following attractions are designed for the enjoyment of the younger guests at Magic Kingdom Park:
The Magic Carpets of Aladdin,
Under the Sea - Journey of the Little Mermaid,
Prince Charming Regal Carrousel, or
Mickey’s PhilharMagic are just some of my favorites.
Because you have one day to visit, maximize your time, and experience the most attractions, I recommend Disney Genie+ because it will allow you to book a return time to bypass the traditional stand-by line and go through the Lightning Lane. It can be purchased via the My Disney Experience app the day of your visit or added when you reserve a Walt Disney World vacation package.
We are here to help if you have additional questions.
Have a magical adventure!
Raquel