Where are you staying?? Will you have a car? We really love Kouzzina on the boardwalk .. Very yummy. The Wave at the Contemporary is also pretty good..
If near the boardwalk area, "Fresh" in the Dolphin resort has a really great breakfast as well..
In terms of character breakfasts, we have only been to Chef Mickeys, and were not that impressed.
Edited to add: I noticed on your signature you are staying at SSR?
If so, Earl of Sandwich , and Wolfgang Puck also do breakfast, but it is more quick, not really TS I believe...