I believe this is how it worked, was flying on NW ticket and got upgraded BWI-CLE on CO. Also got to use Presidents Club there but think this was because of Amex Platinum card. Bonus miles came through as well. Was this simply an exception?
Otherwise, my Platinum card had only entitled me to exit row seating and extras on in flight peanuts. ;=
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"Fly me to the moon and let me earn alot of miles."