Originally Posted by
fgirard
But, they could say that you get access when you show your MP card (physical or digital), and still have the boarding passes show with group 5.
I think in the Big Metal Bird episode (BTW, what's up with the annoying new host?) they explicitly said Elites and CC holders will board with their "normal" group.
I've also seen gate agents explicitly reject MP cards and CC during boarding as in "If your boarding pass doesn't say Group X, nothing else matters"/"If you have the credit card, your boarding pass will indicate the correct group." so I'm not sure why they would relax that guidance.
I can't say I've seen a GA accept a MP card in lieu of BP status since UA/CO merged and I was introduced to the wonderful world of boarding groups.