Actually, it remains to be seen whether I'll be credited for all 11 cards, since they're giving me the runaround on crediting for some additional cardholders, and it's also a bit of a hassle to get some of my family members to give me access to their accounts to resolve their credits.
Either way, Amex is out of line for not proactively crediting people whose charges were pending but not processed on 11/26, and the supervisor that I spoke to was not the least bit apologetic.