Hi there, Jacob!
Thanks so much for visiting us here at the Disney Parks Moms Panel with your question.
Holiday time is the most magical time of the year at the Disneyland Resort with festive decor around every corner, seasonal treats, Characters dressed for the holidays, and even limited-time Christmas-inspired attractions.
Based on your question, there may be some confusion between the holiday offerings at Disneyland Park in California and the Walt Disney World Resort in Florida.
Mickey's Very Merry Christmas Party is a fantastic celebration that happens every year at the Walt Disney World Resort in Florida. You will get to meet unique Characters, see exclusive entertainment like the Holiday Wishes fireworks and the Once Upon a Christmastime Parade, and have the opportunity to eat more delicious cookies than Santa himself!
Currently there is not a ticketed Christmas party at the Disneyland Resort in California. All the amazing holiday festivities at the Disneyland Resort are included in your standard ticket like the "Believe...in Holiday Magic" Fireworks and A Christmas Fantasy Parade. You can even taste your way around the world's winter holidays at Disney California Adventure's Festival of Holidays. If you plan on visiting the parks in California but accidentally purchased tickets to the event in Florida, you may want to call the Walt Disney World Resort in Florida for assistance at (407) 566-4985. If you actually are heading to Florida, you can find all information about party times on the
Magic Kingdom Park page under "Hours" and "Ticketed Event."
I hope this helps, and I'm wishing you a holly jolly vacation!
-Jennifer