We're taking a cruise RT from Civitavecchia.
We plan to get to Rome a day or two before, but must depart for the cruiseport on a Sunday.
So we hope to take a regional train from Roma Termini to Civitavecchia.
Our cruise ends a week later, and we prefer the cheaper train fare (total E56) rather than the expensive cruise transfer ($170) to FCO.
Is it difficult to travel on Sunday on the regional, and also on the Leonardo Express from Roma Termini?
Are reservations necessary?