I haven't booked CP that late for the character breakfast, but I would imagine things will work like most buffet places...Since you booked a breakfast, more than likely you will see a transfer during your time spent there. If you have never been there before, they have like a U shaped area where the same food is setup on each side...So, If you split the letter "U" in half, one side would have the same thing as the other. What will probably happen is you will see them move all the breakfast items over to one side, while they prepare the other side for the lunch menu. That is typically how most buffets work during the transition from breakfast to lunch. I wouldn't worry about them taking all your breakfast stuff away, as I am sure they will still have half the area setup for breakfast...Another person who has been there during the transition could probably give better feedback, but from my previous buffet experiences I have seen that at most places...