Hi Janet!
GMFB is part of your package so it`s free, you get to enter the park one hour before officially opening and after having breakfast you have the great opportunity to go on some of the rides like Peter Pan before the crowds arrive.

You can enter Fantasyland by train or walk through Main Street which I think is much faster and a good time for taking photos of the castle!
When arriving at the hotel you can choose the day for your GMFB, the choice of food is the same as the hotels offer (at least the santa fe don`t know about the Newport though).
So good chance to experience Fantasyland without queuing!