Hi Janette,
I'm so happy to hear that you were able to get breakfast reservations at
Cinderella's Royal Table. This is a quintessential must-do for my little princess, so I know you will have a memorable time with your family. Some of my favorite memories of my kids at Magic Kingdom are from dining there. In fact, on one of our last visits, my youngest son, a toddler at the time, was completely smitten with Cinderella. He held her hand during the photo before our meal began and would not let go. It was priceless.
To answer your question, this is one of those hassle-free meals since you pay ahead of time. So, now that you have paid, you should not incur any additional charges. If you choose to leave an additional tip on top of the automatic gratuity, that is completely your prerogative.
Be sure to have your camera ready to capture those one-of-kind moments with the Disney princesses. I hope you have a magical visit and enjoy your stay at Walt Disney World. It will be here before you can say, "supercalifragilisticexpialidocious!" Thanks for stopping by the Disney Parks Moms Panel.
Bon Appetit,
~Allison L