Hi Duncan,
Welcome to planDisney!
How generous of you to buy your sister a
theme park ticket! There could be a number of reasons why you cannot make a
Disney Park Pass system reservation. I am assuming that your sister is linked in your
My Family & Friends List in
My Disney Experience and her park ticket is
linked and assigned to her profile.
Looking at the
theme park reservation availability calendar for your arrival date, park pass reservation availability is limited. Currently, only EPCOT and Disney's Animal Kingdom have availability. If you would like to visit Magic Kingdom or Disney's Hollywood Studios, keep checking because availability could change any day.
If you have the park ticket linked and there is availability for the park you wish to visit, but you still cannot make park pass reservations,
contact a Cast Member in Website Support. I have called in the past with a similar issue and they were able to assist!
Duncan, stay persistent! I can imagine that you want to plan a magical trip for your sister. Be sure to also review the details for Disney Genie and Genie+ and make sure you have the
My Disney Experience Mobile App downloaded so that you can use
Mobile Food & Beverage Ordering while in the parks!
Magic and memories,
Donyell