Hi Brandi!
Welcome to the Disney Parks Moms Panel.
Congratulations on securing a breakfast reservation at one of the most sought-after locations -
Be Our Guest Restaurant! I love dining there, it is truly such an enchanted setting. Take some time to look around all three dining rooms while you are there. It is so magical! The
Disney Early Morning Magic - Fantasyland should not affect your dining reservation, other than the higher number of guests entering Magic Kingdom Park earlier than usual, all heading towards Fantasyland. The Guests for that special ticketed event will be admitted at 7.45am, and they will be enjoying their breakfast at Cosmic Ray's Starlight Cafe, so that should not affect your dining experience. I would recommend you arrive by 7.30am at the latest, and after you have been through a security check, make your way to scan your MagicBand or park tickets at the entrance with a sign for "Guests with early dining reservations".
Magic Kingdom Park will open the gates at 9.00am to regular guests, at which time all the attractions will be open for everyone too. The only reason I would change your dining reservation is if you wanted to be one of the first guests entering Magic Kingdom Park, for that exclusive quiet experience just before the park opens for the day. Other than that, I don't think it will impact you at all. Have a wonderful time at the Beast's castle!
Please come back and visit us if you have any further questions. We will be happy to help you plan your magical vacation to Walt Disney World.
~ Sue