Hello Ann! Welcome to the Disney Parks Moms Panel.
Two of my favorite characters to meet in all of Walt Disney World Resort were Anastasia and Drizella, Cinderella's goofy, yet lovable step-sisters. As far as Character Experiences are concerned, they are definitely unique.
As far as a "high tea" is concerned, I cannot find any information on the Step-Sisters participating in the
Afternoon Tea at Garden View Tea Room or
Perfectly Princess Tea at Disney's Grand Floridian Resort & Spa. When my daughter participated in the Perfectly Princess Tea the experience was hosted by "Rose Petal", and Aurora from Sleeping Beauty.
Anastasia and Drizella are a part of the
evening dinner Character Dining Experience at 1900 Park Fare at Disney's Grand Floridian Resort & Spa and I heartily recommend that you make Advanced Dining Reservations for the experience. It was during this dinner that Drizella proposed marriage to my son once we informed her that he was a "little prince". The Photos were hilarious!
Anastasia and Drizella also make regular appearances in Fantasyland at Magic Kingdom to meet and greet with Guests. Be sure to check a Times Guide upon entering Magic Kingdom to see if they will be there.
Have a Magical Visit!
~Todd