Thanks for the reply. I actually have no status with US and my handle name simply comes from the color of my car back then. In any case, it's an hour and a half flight and I obviously don't have e-UGs with US, so I just asked out of curiousity and not because I was planning to UG (e.g. BA uses M even when full Y ticketed, and I thought this could be a similar case).
Anyways, do you have a list of booking codes by priority? Just for the sake of completeness, since I raised the topic, I'm curious to know.
Regards,