What does it mean when the itinerary pdf says Pick up procedure: Biglietto Elettronico regionale?
That e-tickets do not need to be picked up (and time stamped), being electronic tickets.
I'm looking for your intended tracks...
... ok Regionale #3382 usually leaves, from platform nr 2. https://goo.gl/tLLI78 .
Regionale #22276 usually leaves from platform 12. https://goo.gl/30BhhJ . If I counted correctly, it makes 13 stops before calling at Rome. Don't wait the last second to get your stuff and approach the door.
As I wrote, those are the intended tracks that, like airport gates, may and often do change. The trick is waiting in front of the "Partenze/Departures" monitor closest to the intended track. In Naples it's quite easy because Centrale is an head station where you don't have to use underpasses.
I'm sure you know that:
- 4/25 is a national holiday and all trains may be crowded
- there are tons of earlier high speed trains going to Rome, run by trenitalia.com or italotreno.it (aka the private competitor with great sales).