Natalie Cutler has written a piece for the Express and Star on her visit to the John Wick set during her visit to NYC. Ms. Cutler was invited to the set by her friend who was a stunt double on the set.
The day she visited the set Keanu was sitting behind the camera watching everything as his stunt double was filming a scene. She said the following about the scene:
Guns were blazing, lights were flashing and bodies were flying everywhere. It was spectacular.
While she got to meet some famous people, she thought the buffet was the best thing about the movie set.
You can read her account here.