Originally Posted by Flyingfox

You bring up some interesting points. Not to sound like a grinch, but.........

Most Asian airlines would NOT move people up just because seats are available. That would be called "diluting the product", which American-based carriers do, but their "products" are not in the same league. This is why premium cabins in Asian carriers are just that, "premium".

Of course you fly in the cabin you paid for. You're not one of their frequent fliers, so they owe you nothing else. Why would they move a bunch of people up just because there is space? How would the paying customers in those classes like that? Would you then refund their fare since everyone else in the cabin got the product for free?
You don't go to a BMW dealership and pay for a 3-series and walk out with a 7-series, right?