Originally Posted by
olisch
Well, I booked that fast track service 2 years when we had 60 minutes left between arrival at BKK and our flight to UBP.
Murphys Law struck hard and we arrived nearly 30 minutes late at BKK. With the help from the staff of BFS we made from the gate, through passport control, through baggage belt, through customs, through half of the airport to domestic check in from TG within 25 minutes. Including lots of baggage and two toddlers.
I really doubt that we would have made it without that help.
And this was exactly my point: The service took you to through immi, customs and to the street. UBP does not have customs so everything must be done in BKK.
The HKT transfer doesn't require that and pax can use the transfer security and grab bags/customs in HKT. Going through the regular immigration channels will actually cause some (overcomable) hassles upon arrival in HKT.