Instructor Led Activities Ninja Warrior Class Instructor will lead, teach, and encourage party guests through specific obstacles. This is a more hands on approach to the party for an added cost based on chosen time that you want during the activity time. 20 mins (of the hour) - $50 40 mins (of the hour) - $100 Ninja Warrior Wristbands (while supplies last): 10 wristbands for $15 15 wristbands for $25 20 wristbands for $30