Following is a transcript of the video. It's just like a bar. You wouldn't bring your own booze into a bar. You cannot drink your own alcohol on an aircraft. A lot of people don't know this.

A lot of restaurants in the city are B.Y.O.B. — bring your own bottle/beverage/booze. Whatever you want to call it, it means you can't buy alcohol on the premises. This may come as a surprise.