Christmas came a little early last year. It was the end of September and still pretty hot out, but the stars of The Night Before were rocking holiday sweaters. When I arrived at the film’s Steiner Studios set in Brooklyn, New York with a group of visiting journalist, Seth Rogen and Joseph Gordon-Levitt were in the middle of playing Kanye West’s “Runaway” on a gigantic piano with Anthony Mackie jumping around screaming “who got ya” as backup.

The scene takes place at the beginning of the movie when Ethan (Gordon-Levitt), Isaac (Rogen) and Chris (Mackie) are first kicking off their annual Christmas Eve reunion. It’s something they’ve been doing together since high school, but now that they’re entering adulthood, partying just isn’t a priority anymore, the tradition is coming to an end and Ethan isn’t happy about it.

During our evening on set we got to talk to loads of people behind the film including Rogen, Gordon-Levitt, Mackie, director Jonathan Levine, producer James Weaver, and writer-producer Evan Goldberg. I’ll be sharing those interviews in full soon, but they’re absolutely loaded with story details, information regarding the tone and style of the film, and so much more so first I bring you 23 things to know about The Night Before.

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Image via Sony Pictures