Originally Posted by ijgordon
Well, doesn't CO refer to the "sanctity of the BF cabin" in defending the ridiculous 72-cum-24-hour rule? Or am I thinking of another word?

Scarcity? Serenity? Hmmm..., no I think it was sanctity.
[Quotation of benign reference to inappropriate comment deleted by moderator]
It's actually the "integrity" of the BF cabin.
And to the OP, if you're Gold or Platinum, you can waitlist a companion for an upgrade at the airport within two hours of departure. Little chance it would clear though.