Greetings, Amanda!
Outside of Cherry Tree Lane, I am also one of Mary Poppins biggest fans and every Disney trip, I must find her and get the latest news on Jane, Michael, and Burt.
There are a few locations around Walt Disney World where you can meet Mary.
1.
Epcot-United Kingdom Pavilion. Be sure to check your
My Disney Experience mobile app to know when she will be there. There's also a sign located on the pathway just down from the International Gateway that will list her times for pictures and a bit of conversation.
2.
Disney's Grand Floridian Resort and Spa-1900 Park Fare-Supercalifragilistic Breakfast. Not only is Mary Poppins there to greet guests, but so is Alice in Wonderland, The Mad Hatter, Winnie the Pooh, and Tigger.
Also, be on the lookout for Mary Poppins in the Magic Kingdom. She sometimes will take a break from popping in out of the paintings to wave at guests throughout the parks. During this time, she may not be available to take pictures or give hugs. She's just casually strolling through the park and if you're lucky, you may get to see her with Burt!
Also, remember that character schedules can change without notice, so be sure to check your My Disney Experience app closer to your Disney days!
I know that you and your grandchildren will have a jolly holiday during your Disney vacation. Please stop by and visit with us again soon!
Korliss