Hi Rodriguez! Welcome to the Disney Parks Moms Panel and thanks for your question.
Mickey’s Very Merry Christmas Party is a very special event held on select evenings at
Magic Kingdom Park during holiday season. If you have the chance to enjoy it during your stay at WDW this year, I encourage you to do so. You will have a wonderful time! You will enjoy a special parade and fireworks, and will get to see Disney characters dressed in their Christmas best. A lot of fun for the whole family.
For attending this very special party, you will need a special ticket. As tickets are limited, I encourage you to purchase them as soon as possible if you decide to enjoy this amazing party.
Remember if you are planning to visit Magic Kingdom Park during the day, and other Disney Theme Parks, you will need to have valid park tickets for admission. The ticket for the party is specific for one select evening at Magic Kingdom Park.
Hope this helps your planning. Let us know if you have further questions.
Have a magical day!
Gina V.