Hi Judy,
I love answering your question. The Tremaine Family might be the most fun character greeting in all of Walt Disney World. Although always subject to change, you can find Lady Tremaine, Anastasia and Drizella near the Fantasyland Great Wall most mornings in Magic Kingdom. If you happen to have the My Disney Experience app for a smartphone, you can locate them by clicking on "Characters" at the top of the screen.
Another awesome interaction is to book
Cinderella's Happily Ever After dinner at 1900 Park Fare in Disney's Grand Floridian Resort & Spa. We've been "banned" by our 9-year-old son because the ladies had such a great time interacting with him (his sister loved watching him get SMOOCHED by Drizella!) The character dining here is really top notch, given the fun character entertainment, delicious menu offerings and grand atmosphere of Disney's flagship resort. It's a hop, skip and jump from Magic Kingdom via the monorail.
Reservations are highly recommended and can be booked
online or by calling 407-939-3463. Be sure to book dinner only (breakfast and lunch do not offer Cinderella characters).
Let me know how else we can help, Judy. I wish you a magical vacation.
Sherri