On the Disney site, it says they serve breakfast until 10:55. We had reservations once like this at Crystal Palace. We started our meal with breakfast foods, and they changed to lunch foods while we were there so we enjoyed those too. We were charged for a breakfast meal. I am not sure how they would charge you. It would be my guess that you would be charged according to the time they seat you. We loved our meal there!
Have a great time!