In my experience the only way to do it is with points - I have a CPH-ORD/SEA/IAD run around once a month and have had it for quite some time. I have NEVER been op-up'ed. A reason could be that I prefer to sit in the lounge foe quite some time / or arrive in the last minute - rather than linger around the rather chaotic scenes at the CPH US gates. With points it is another matter