Hiya Claudia,
Welcome to planDisney! Thank you for submitting your question to us.
I’m so sorry about your daughter! I hope she gets well soon so you two can enjoy all the magic at the
Disneyland Resort. Don’t worry about your
theme park tickets, as unused one-day tickets are valid through December 30, 2025, and unused multi-day tickets are valid through January 12, 2026. However,
park reservations do have an expiration date.
Disneyland Resort allows Guests to
modify their theme park reservations until 11:59 PM PST the day before the reservation (subject to change)! You can easily modify park reservations in your MyDisney account on the Disneyland Resort website or the
Disneyland Mobile App. Go to “My Reservations”, and click “Modify/Cancel”, and as long as there is
park reservation availability, you can modify it faster than trying to pronounce “supercalifragilisticexpialidocious!” Since it is past the modification window, you need to make a new park reservation for whichever date you can visit.
If you had a
dining reservation set for your visit, I’m sorry to say that you cannot change the date. Guests who wish to
modify a dining reservation before their visit date, click on the menu (☰) of the Disneyland app, and tap "Today's Plans" or "Future Plans" to find and select the reservation. Then select "Modify". You can make a new dining reservation for a future visit, but you cannot modify a past reservation to another date. I recommend you keep checking dining reservation availability, as another Guest could cancel a dining reservation that you would like at any time. With a little faith, trust, and pixie dust, you’ll acquire a new dining reservation for your future visit!
If you have other questions about the Disneyland Resort, remember - you’ve got a friend in me!
Tiffany