I get the feeling I'm missing something really obvious since I couldn't find any previous threads about this, but... where can I find the booking class for fares listed on the Thai website?
In particular, I'm looking at SIN-BKK-NRT fares, and I'm getting a confusing slew of "THAI SAVER PLUS", "I ESCAPE SAVER ADVANTAGE" and "Brand name not yet defined" (!), and eg. "I ESCAPE" helpfully tells me "No mileage accrual for V class. 100% mileage accreal for Q class." So which one is it?
Time to stop fiddling about with the Intartubes and go talk to a travel agent, I guess