And additionally oneworld Sapphire (BA Silver) have access to Flagship Lounges. There aren't that many, of course, relative to Admirals Clubs, and it remains to be seen what the arrangement will be at JFK when the terminal share takes effect.

But generally it's pretty straightforward if your status is with a non-US programme - just carry on as you normally would, and if someone offers you something a bit nicer that you didn't know you were entitled to, just take it!