The box office will always know the length of any show
Starts promptly at 8 and was over at 10:45
Depending on the artist and if there's more than one act. Box office has timing in a general range... until day of show then they have a hard copy of the days events, down to what time each act closes and final encore. If its a Saturday, you might have more options than weekdays, I dont know the ferry schedules.
I'm not sure about ferry schedule but show I attended was over at 11:00! Good Luck...Enjoy!
If you're show is starting at 7pm, should wrap up by 10ish. It's a short walk to ferry.
They have a hard stop from the city at midnight for music, shows I just went to ended right at midnight hope that helps
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