Someone, indeed quite a few people, have queried the logic of the (relatively) low limit set by the legislation. Now I have spent a fair bit of time reading through this entire thread (I know, I should really get out more) and no-one has asked "WHAT EFFECT DOES ALTITUDE HAVE on a person with alcohol in their system?"
Assuming the crew aren't on a secretive oxygen jag behing their locked door they are at the same cabin altitude as Mr & Mrs SLF (Which is what, by the way? 8,000'? ish).
So I'm asking. Any aviation medicos out there?