Hi Michelle.
Welcome to planDisney and thank you for taking the time to reach out to us with your question about modifying your existing Reservation. It looks like you will be visiting Walt Disney World Resort later this year, with the Holiday Season and the
50th Anniversary Celebration in full swing I am sure you are going to have a magical time!
Since you have already tried modifying your existing
Walt Disney World Resort Vacation Package online, I suggest calling
Disney Resort Hotel Reservations to speak directly with a Cast Member. Because you are visiting at a busy time of year, it may be more difficult to adjust your reservation due to availability, but the Cast Member will do their best to assist. If there are restrictions the Cast Member will also be able to give you options as how best to proceed with your Reservation.
I hope you are able to get your visit sorted and that you will be able to enjoy the spirit of the season at Walt Disney World Resort, Michelle. If you have any other questions please don't hesitate to come back to
planDisney, we are always happy to help.
~Stephanie