Originally Posted by
TerryK
Some countries take the position that once you clear immigration, you are no longer in transit, even though you are in transit for airfare purpose. BKK, TPE comes to mind. The only way you could avoid the tax is to pray for agent error.

So I guess since I will be staying the night in downtown Bangkok, I might as well include the airport tax for BKK together with my payment of my RTW airfare. I will then not to worry above insufficient Baht cash, and I get to earn a few extra miles on my airline affiliated credit card.