Originally Posted by
superflush
What? You can buy tickets from the kiosk machines with a credit card. And there should also be a stand at the platform where someone is selling them.
Quote from
http://www.toandfromtheairport.com/rome.html
Because of the difficulties of getting tickets at the Rome 'Termini' and the city in general, you are advised to buy your return ticket here at the same time. They are usable for both directions with no apparent expiry date. BUT DO NOT VALIDATE THE RETURN ONE NOW.
I thought it sounded a bit odd, hence the post.