Welcome to the Disney Parks Moms Panel, Joey!
I'm so glad you checked the theme park hours for
Magic Kingdom Park on the day of your
Be Our Guest Restaurant reservation. You are correct that only Guests staying at a Walt Disney World Resort hotel may take advantage of the attractions and restaurants in one of the theme parks during Extra Magic Hours. It is entirely possible that you will not be able to access Be Our Guest Restaurant at that time. I heartily encourage you to call (407) WDW-DINE, or (407) 939-3463 soon and often (if necessary) to modify your dining reservation so that you will be able to dine in Beast's Castle during your upcoming visit to Magic Kingdom Park.
I'll keep my fingers crossed that you will be able to bump your reservation to an earlier time on January 30th or perhaps to another day. If that is not possible, perhaps you would consider modifying your reservation to dine instead at either
The Plaza Restaurant, with its mesmerizing views of Cinderella Castle, or
1900 Park Fare in Disney's Grand Floridian Resort & Spa, where Cinderella, her stepsisters and Prince Charming entertain Guests amidst a tasty and extensive buffet.
Of course, if your heart is absolutely set on Be Our Guest Restaurant and you are unable to modify your reservation, stop by the check-in desk at Be Our Guest Restaurant early in the day and explain your predicament. Perhaps the Cast Members there will be able to get you a table before 8 p.m. during your visit.
Sending best wishes and pixie dust,
Jill