What is Cast Party?
1.
A cast party is a party after the closing of a theatrical production which for the most part satisfies the three major vices: sex, drugs, and alcohol. And it doesn't end until well into the next day. Although there aren't many who don't succumb to the vices, they're still free to attend and still have fun.
Person A: You going to the cast party tonight?
Person B: Yeah, I'm gonna get fucked up.
See