Hey there Jody,
Thanks for your question and welcome to planDisney!
Travel disruptions can be so frustrating. I experienced quite a few on a recent trip that threw our plans off, so I very much understand your desire to think out possible scenarios here in case you experience delays as well. Luckily, the Disneyland Resort is very flexible when situations like this arise!
In general, the two things needed for a trip to the Disneyland Resort are
theme park tickets and
theme park reservations.
Tickets are one-time purchases and typically don't expire for quite some time after purchasing (you can double-check this in the confirmation email you received when you purchased them, but if you purchased them recently then they likely don't expire until late 2024 or early 2025, depending on the ticket type). While multi-day tickets will expire 13 days after their first use, it sounds like your tickets are wholly unused at this point.
Theme park reservations are needed for each day you plan to visit the parks and are subject to availability based on park capacity. This is the detail for your visit that would need to be addressed if you experienced a disruption in your travel plans. However, it's also easy to switch your theme park reservations!
Typically, you can change your theme park reservations in the
My Plans section of the Disneyland Resort website. However, I have heard of some issues if you're trying to change a theme park reservation for a date that has already passed. If you run into that issue then I would recommend
calling a Cast Member at the Tickets line or visiting one of the ticket kiosks near the park entry gates.
Thank you again for your question, Jody! Your trip will be here before you know it and I hope you have a fantastic time visiting the Happiest Place on Earth.
Have a Magical Day,
Greg