Hi Sara,
Welcome to planDisney! I hope you're looking forward to your visit to
The Happiest Place on Earth and counting down the days until the magic and fun begin!
I'm happy to let you know that, yes, it's certainly possible to switch theme park reservations! I'd encourage you to check the
availability calendar to make sure your preferred park is still available on your selected date, then use the
My Theme Park Reservations page or the handy dandy
Disneyland mobile app to cancel your current reservation and make a new one. If you have a multi-day ticket or are rebooking on the same date, you won't have any trouble using your current ticket. If, however, you have a one-day ticket and decide to change the date of your visit, you may need to
upgrade your ticket tier before being able to make your plans and use your ticket.
Thanks so much for visiting us at planDisney, Sara, and please let us know if you have any additional questions. I'm sending pixie dust that your plans all come together perfectly, and you have a truly magical Disneyland Resort adventure!
Missy