January 29, 2020 at Disneyland Park
"Stroll down memory lane during this throwback bash packed with totally tubular fun!"Look for a Flashback to Videopolis, the 80s dance party, to take over the Fantasyland Theatre, along with throwback-style encounters with classic Disney friends. Look for themed decor, food, beverages and merchandise. Later, Awesome After Dark - Fireworks To The Max! will light up the sky. The party is 9:00pm to 1:00am, but ticketed guests can enter the park as early as 6:00pm. Sweethearts' Nite
February 12 & 13, 2020 at Disneyland Park
"The Happiest Place on Earth will once again transform into the most romantic—with an extra pinch of pixie dust!"
March 5, 2020 at Disney California Adventure
"Spend an exciting night celebrating some of the world’s best-loved stories and characters from Pixar Animation Studios!"Enjoy three different PIXAR-themed dance parties and meet your favorite characters. Themed decor, food, beverages and merchandise will also be available. The party is 8:00pm to 12:00am, but ticketed guests can enter the park as early as 5:00pm. Villains Nite
April 30, 2020 at Disney California Adventure
"Unleash your inner villain at a deliciously sinister soiree bursting with Disney’s most mischievous misfits!"The new Villains Cabaret will include a cast of Disney Villains singing and dancing their way through a review. Look for themed dance parties throughout the park and chances to meet more Disney Villains and their henchmen. Themed decor, food, beverages, and merchandise will also be available. The party is 9:00pm to 1:00am, but ticketed guests can enter the park as early as 6:00pm.
Tickets for each of the events are $109 per person (and do not include parking). Tickets for all events will go on sale December 3rd for Annual Passholders and December 4th for the general public. While some costumes are allowed, ticketed guests should refer to Disneyland's special event costume guidelines for restrictions. Source: Disney Parks Blog