Hi Laura,
Thank you for reaching out to us here at planDisney with your question about modifying your existing reservation. It looks like you are going to be headed to Walt Disney World Resort in the new year, how exciting!
In order to modify your existing reservation to add another guest you will need to call
Disney Resort Hotel Reservations and speak to a Cast Member. They will be able to add the guest to your reservation in no time! Your reservation will be updated in My Disney Experience in up to 24 hours and you will receive an email confirmation as well.
Once the additional guest is added, please remember to add them to your
Theme Park Reservations to make sure they will be able to visit the Theme Parks with the rest of your party. This can be done as soon as they have been added to your package, all you need to do is select "My Plans" from the drop down menu on the "My Disney Experience" tab and then choose "Theme Park Reservations". All of the updates will be visible in
My Disney Experience within 24 hours.
I hope you have a magical visit to Walt Disney World Resort this winter, Laura. If you have any other questions as your vacation approaches, please come back to
planDisney we are always happy to help.
~Stephanie