Originally Posted by
skit53
How long does it usually take to receive the PLAT card in the mail after successfully finishing a challenge?
Takes a few weeks. However, you really don't need the card when dealing with AA or even most OW partners.
Mostly it is BA lounge receptionists who have the reputation of fussing about the card. If you are not passing through LHR in the next few weeks, you should be ok. Even if you are, try BA lounge anyway if you desire because other OW lounge are always there as backups.