Originally Posted by
CPH-Flyer
If booked with ANA miles, you can potentially buy a premium economy seat at the airport.
You can upgrade to J with miles on a cash ticket, if you have the right (read rather expensive) booking classes. When you select flights on the ANA website, it is quite clear whether the selected fare allows for upgrades.
Thanks, very helpful .. do you know what happened if I waitlist more than one tickets by the way like different classes?