Originally Posted by
aaupgrade
No problem with lounge access as Emerald should be printed on your boarding pass. As long as your MALEV Duna number is on your reservation, and Malev's system provides the required information to the other OW carriers then Emerald should show up on your BP. That is the way it works for this AAdvantage member.
One word of caution - BA pretty much universally require the card to be presented for lounge access even for their own FF.