Hi Christina, welcome to planDisney!
How fun! Sounds like you have a magical trip to The Happiest Place on Earth coming up!
I have GOOD NEWS! First and foremost, I checked the
Theme Park Reservation Availability Calendar and there is full availability at both parks for December 27, 2022. With that said, I completely understand that plans can change, especially for a large group. The great thing is that if you purchase your
theme park tickets through the Disneyland Resort website, one-day tickets are valid through December 30, 2024, and multi-day tickets must be used within 13 days of first use or by January 12, 2025, whichever occurs first. So you and your group will have plenty of time to use the tickets if you're unable to attend on December 27, 2022.
I recommend you go ahead and purchase your tickets and make your
theme park reservations for December 27, 2022. Then if plans change, you can easily reschedule your reservations to another date. And it's super easy to reschedule your reservation. First, you would need to cancel your current theme park reservations by logging in to your Disneyland Resort account, selecting the "My Disneyland" link, and then clicking the "Ticket and Reservation Details" link. You would then select the reservation you wish to cancel and click "Cancel Reservation". Once canceled, you're free to go ahead and book your new reservation!
If you have any other questions, we're here for you!
See ya real soon!
Jin