Are class II sleeper cabins air conditioned?

Yes, most of them are. You can see if the class comes with aircon or fan when you book it. The aircon in the trains or buses could be set to a temperature that would make a polar bear smile, so you better make sure you carry an extra jacket or your own blanket. You can also ask the conductor for an extra blanket.

Tags: Thailand, Thai Railways

Thai Railways

OK

I don't have a booking number. I have not purchased a ticket yet.