Originally Posted by
Ilove2fly
Flight to Taipei is very likely on Eva. I am not sure if we can use OP miles to upgrade on Eva.
No, you can not.
Originally Posted by
Ilove2fly
If not, then there is not difference between the booking class. Personally, I would book the flights directly with Eva and book the Evergreen Delux cabin. It is always MUCH cheaper than booking on CO.com. Of course, you run the risk of getting 50% EQM for the domestic segments.
You also run the risk of zero EQMs on the BR flights; very few earn CO EQMs any more.