Royal Caribbean offers interline discounts on select sailings to Vacations To Go customers who are currently employed with a domestic or international commercial passenger airline, Federal Express, Airborne Express, or United Parcel Service (UPS). These guests may book up to three staterooms at the interline discount. The following guests are also eligible to book three stateroom at the interline discount: spouse or domestic partner currently employed airline employee; parents of currently employed airline employee;  air traffic controllers (NATCA & CATCA) and GDS Employees ((CRS) employees of Sabre, Worldspan, Galileo/Apollo, or Amadeus); retired employee from a domestic or international commercial passenger airline, cargo carrier, Air Traffic Controllers or GDS Employees, provided the airline is still in operation (e.g. retired employees of Pan American Airways do not qualify). Qualifying employees must present an I.D. badge from their respective company at the pier. Please note that interline rates are for new bookings only.