> Once the boarding door closes, there is no way to ever gain money on that flight. What about in-flight food and alcohol? In-flight wifi/movies/media? Does Sk

> Once the boarding door closes, there is no way to ever gain money on that flight. What about in-flight food and alcohol? In-flight wifi/movies/media? Does Sky Mall pay a commission? I'd be curious how much all of those things add in revenue after the door closes.