The Bloggers of the Disney Parks Blog are live blogging throughout the Monstrous Summer All-Night Party. At Walt Disney World they've shared photos of Mike and Sully who earlier in the day participated in the Move It! Shake It! Celebrate It! Dance Party.
There were also photos shared of the Monster Mania DJ Dance Party that's taking place between 4-9 PM at the Rocketower Plaza Stage in Tomorrowland.
The Welcome video can also be seen below: