Here’s your survival guide, condensed. Assume the main act goes on at 9:00 PM and finishes by 10:45 PM at the latest (if they don’t care about the fine). Then add 15 minutes for the encore that everyone knows is coming but still screams for. That puts you in the sweet spot of 10:00 PM to 11:00 PM for leaving.
So, to sum up: you will not be home by midnight for your cocoa. You will probably be fine for the last train. And you will definitely spend the walk to the station wondering why you paid £100 to stand in a giant concrete bowl for three hours. But hey, at least now you know when the curtain falls. Enjoy the show, and for the love of all that is holy, pee before the encore.
