Hi Chad!
Welcome to planDisney.
I'm very happy to see that you want to dine in one of the most magical locations at Walt Disney World -
inside Cinderella Castle at Magic Kingdom Park! It doesn't get any better than that!
For any dining within a Disney theme park, you will need park admission tickets, even if you are only visiting for dining. If your reservation is for earlier than the official park opening time, you will see an entry point for guests with dining reservations, so you can enter the park before it opens. They should let you in a little early for yours.
If you drive to Magic Kingdom Park, you will park at the Transportation & Ticket Center, from where you'll board the monorail or ferryboat to take you across Seven Seas Lagoon to the park entrance. All Disney transport will begin operating around 45 minutes before park opening, so if you ensure you are parked in plenty of time, you will not be late for your magical breakfast!
Cinderella’s Royal Table is very popular! Located right inside Cinderella Castle you'll meet Cinderella before you go up to the dining room where you'll be visited by Disney princesses during your meal.
Please come back and visit us again if you have any further questions, and you can
send me a direct question if you wish. We will be happy to help you plan your magical vacation to Walt Disney World.
Sue