Hi Brenda,
I am sure your princesses are beyond excited to be heading to this magical place. There are several places that you can meet the princesses for meet and greets. To
meet Ariel, you will want to go to her grotto in Fantasyland near her ride, Journey of the Little Mermaid. To
meet Aurora head over to the France pavilion at Epcot's World Showcase. You can also try at the newly opened
Princess Fairytale Hall near Cinderella's Castle in Fantasyland. Keep in mind that Cinderella and Rapunzel are here daily, but a "guest" princess will be joining them. So, it's a possibility that Aurora could be joining them, but not guaranteed.
Be sure to check the times guide or get the very handy mobile app called "My Disney Experience". This official Walt Disney World app will give you character meet and greet information/location/times as well as handy tools such as interactive maps, up to the minute wait times, and much more.
Have a regal visit with those special princesses.
~Allison L