It will take about 12-15 minutes to walk from Tusker House to Nemo's "Call of the Wild" theater.
(Just about as far apart as two walkable locations DAK can be.)
Be sure and ask for your meal's bill when you are first seated.
Then, settle up well before you are finished with the meal.
That way you'll be ready to scoot as soon as the last bite is chewed and the last character is hugged.