Guaranteed Seat Reservation is a benefit for Gold and Diamond members that allow them to reserve a seat on any flight, no matter how full it is. Gold and Diamond members can request a guaranteed seat in Economy Class (Y) for Cathay Pacific or Dragonair flights. Diamond members can also request a guaranteed seat in Premium Economy Class (W), and Business Class (J) on Cathay Pacific flights only. This is applicable only to full fare tickets. Requests for Guaranteed Seat Reservations can be made via the Marco Polo Club service line.