This was shot at this week's Beijing Open, where Wozniacki has already advanced to the quarterfinals.
Her day consists of a lot of press, a lot of time spent with her father/coach and not much tennis. This looked like it was filmed on the media day before the tournament began, hence the number of interviews and the evening gala. Once things settle down, I imagine the day is less exciting. Lots of waiting around hotel and locker rooms and preparing not to play top-five players.