Originally Posted by
thijsseh
Oh dear, I have a big stash of these things. Always get them but never use. Keep for a rainy (=Blue) day.
But if they don’t hand them out anymore they probably won’t accept them either.
I'd wager at them working anyway. Happened to me once at AUH, was handed a fast track card onboard but had an old format one in my carry on which I thought best use now and save the "new" for a rainy day. Officer at immigration, turned it over looked at his colleague and said to him in Arabic "look at this guy with his fast track from 1980".