Originally Posted by
flyerby
RJ Gold and up also receives fast track while leaving BKK but not when arriving.
Silver/Ruby and above for both: departures and arrivals. It's a bit tricky on arrival because you have to catch the RJ staff on the jetbridge and show them your BP, or ideally your card. Tricky because they are always in a rush to complete the turnaround in time, but you are entitled to the voucher.