Hi Hui! Thanks for bringing your question to planDisney.
To enter the parks you need both a valid
admission ticket and a theme park reservation. If you need to modify your park date, you can do that, so long as your new park and date are available. I took a look at the
availability calendar. Currently, there are no available reservations for your new preferred date. Availability of theme park reservations is not guaranteed and it is possible at popular times for them to fill up. I'm sorry if that's not the news you're hoping for today!
Availability may change, however. Keep checking! When people's plans change and they cancel or modify their reservations, availability will reflect that. If reservations do become available, you'll want to modify your existing reservation to the new date. I can walk you through how to do that.
Visit the
Theme Park Reservation page on Disneyland Resort's website and scroll down to "Make or Modify Park Reservations." Click the button to begin the process of modifying to an available park and date. Just act promptly if you see the calendar reflect availability as it can change very quickly.
I hope you're able to secure your new reservation! There's so much to explore in the parks right now, including the
Disney California Adventure Food & Wine Festival. We enjoyed everything we tried at the festival. Our favorite was the Cheeseburger Bao at the California Craft Brews marketplace.
Have a magical day!
Elizabeth