Hi John!
Thank you for bringing your question to the Disney Parks Moms Panel!
I'm so sorry to hear that your wife may no longer be able to go, but I'm sure your sister will also have a great time at
Walt Disney World. There are certain reservations that can be changed online, but I have found it much easier to call. You can call a reservation specialist at 407-939-1936. For your convenience, here is a link to the
Walt Disney World Phone Directory. I recently changed Guests on one of my reservations and even after the new names were on the resort reservation, they still had to connect me to the Internet Help Desk to make sure the new Guests were active in the
My Disney Experience section as well. So, be sure to ask the Cast Member you speak with if you need to do the same.
I hope this helps! Please let me know if you have any other questions.
~Lori