Hello,
I still have paper tickets for the metro- are they still valid? And does everyone wear masks on the metro?
Thank you
Yes and yes (I am literally sitting on the metro as I type this).
By the way, if the tickets are old, the magnetic strip might not work anymore, but this does not make them invalid! If you find that a ticket does not work, you can go to the counter and ask for it to be checked and replaced. The staff will do so (sometimes grudgingly if it is more than 1-2 tickets).
Great info! Cheers