Magic Kingdom Park will close at 6:00 pm on Mickey’s Very Merry Christmas Party event nights in 2017. The party will still be held from 7:00 pm to midnight. Guests who are already in the park with a regular Magic Kingdom ticket will be able to continue to enjoy the park's shopping and dining offerings, but attraction access will be limited to those with tickets to the party.
It is unknown if this means that guests with event tickets but without Magic Kingdom regular admission will still be able to enter the Magic Kingdom at 4pm.
Previously the park closed at 7pm on event nights as is the case with the 2017 editions of Mickey's Not-So-Scary Party.