Hi, Maciel!
Congrats on securing a reservations for
Cinderella's Royal Table. How often can you say you plan to dine in a Castle? Super magical!
If you add on the
Disney Dining Plan, the charge for your reservation will still remain on your credit card until you arrive for your reservation. When checking in, let a Cast Member know you are going to use your Disney Dining Plan credits. At that time, your credit card will be refunded and your Meal Credits used.
As far as pricing goes, prices are set by age. Since your princess is age 10, she will be charged at an adult price. Kids pricing is for guests age 3-9. Chat with your server, and inquire if you can get an adult portion of items from the kids menu. Hopefully they will accommodate you as they want everyone to eat like Royalty during this experience.
Wishing you a magical dining experience in the
Magic Kingdom and please say "Hello!" to Cinderella for me!
Cathy