Hi Anne,
Welcome to planDisney! I'm sorry we weren't able to get to your question sooner, and I hope you were able to find everything you needed to switch your
theme park reservations before you arrived at The Happiest Place on Earth!
If you have more days remaining on your
California resident ticket, I'm happy to share that yes, your dates can be flexible! There's currently no way to modify a theme park reservation, but you're more than welcome to use the
My Theme Park Reservations page or the
Disneyland mobile app to cancel any reservations that no longer work for you and make new ones! I always recommend that Guests check the availability calendar
before canceling anything just to be sure that there are still openings, but please feel free to use your ticket on the dates that work best for you! Just be sure to enjoy all three of your days between now and September 30th! Losing a day or two because your ticket has expired would certainly NOT be magical!
Thanks for bringing your question to us here at planDisney, Anne. I hope your memories from the
Disneyland Resort put a smile on your face for years to come!
Missy