Hi, Christine!
Be Our Guest is a very popular dining location, so it is very important that you arrive for your dining reservation as scheduled or I am afraid you may be denied seating.
Breakfast is a quick service meal, and you will order your meal upon arrival (or use advance order) then your meal will be brought to your table. The last breakfast guests are seated and served at 10:30 am, then lunch begins at 11:00 am. If you prefer the lunch menu, you may want to keep checking for a new reservation time.
I understand your dilemma as it seems you prefer the lunch menu. However, there is break in the serving so it is not possible to just hold off ordering until the lunch menu is available. I suggest to keep checking for lunch cancellations, and if staying at a Disney Resort hotel, consult with your
Lobby Concierge to see if any tables become available.
Whichever Be Our Guest meal you end up at, I hope you enjoy your visit to the Beast's Castle. It is so beautiful and quite a memorable experience!
Cathy