Kind of a tough one. Almost all of the best brunch spots in Orlando are in Winter Park, a bit of a hike from Disney.
The Boheme
White Wolf Cafe
Maxine’s on Shine
Stubborn Mule
Farm & Haus
Plancha at Four Seasons is closer, but I’ve found the service is much better than the food. Oscar’s at the Waldorf is a buffet, and I’m not a buffet fan, but it’s a nice space.