Hiya Sherry!
Princess Aurora is my daughter's favorite princess (next to Rapunzel). There are several locations where you can find the Briar Rose around Walt Disney World Resort.
While she can often be found at the
Akershus Royal Banquet Hall in the Norway Pavilion in Epcot Park, my absolute favorite place to meet with her is at the France Pavilion in Epcot's World Showcase. Sleeping Beauty meets with guests daily in a little alcove in the pavilion and we've always found it to be a lot less crowded than you'd think. She's always taken the time to really talk with my little princess and take lots of great photos (and there is usually a PhotoPass photographer there as well).
Just grab a Times Guide when you enter Epcot to find her exact meeting times and location as they are subject to change.
If you're in Magic Kingdom Park, ask a Cast Member outside of the Town Square Theater to see if Princess Aurora is currently meeting with guests at the Storybook Princess Meet and Greet inside. The Princesses rotate, so you never know who will be there that day!
For an extra special encounter with Princess Aurora, you may want to click over and check out
My Disney Girl's Perfectly Princess Tea Party. (special guests are subject to change at this event)
I hope you and your princess have a magical vacation!