Hi Kermit,
One of the best things about Walt Disney World Resort is that there is always something new to experience during each and every visit.
Unfortunately, at this moment in time, there isn't a Character Dining experience available where you will find characters from Frozen.
If you have a Frozen fan, I would definitely make sure that you plan to see
For the First Time in Forever: A Frozen Sing-A-Long Celebration whilst visiting Disney's Hollywood Studios during your stay. This fun and frosty interactive show features both Anna and Elsa along with some of their other Frozen friends from Arendelle.
As you have already dined with lots of Disney characters during previous visits, might I suggest two character meals which feature characters which are not available at other dining locations, both of which are found at
1900 Park Fare which is located within Disney's Grand Floridian & Spa:-
1/ Supercalifragilistic Breakfast where you may meet such characters as Mary Poppins, Alice in Wonderland, The Mad Hatter, Tigger and Winnie the Pooh
2/ Cinderella's Happily Ever After Dinner where you may meet such characters as Cinderella, Prince Charming, Lady Tremaine, Anastasia and Drisella.
I do hope that this information has been of help Kermit.
Wishing you a magical trip filled with memories which will last a lifetime!
Emma