4 of us plan to take the bus from Rome to Sorrento on Sept 28, Tuesday. We have seen 1400 and 1500 posted as departure times; also, not certain if two buses a day run at that late date. Since the Marozzi website is still only in Italian, how do we get accurate info and order tickets ahead of time? Thank you!
There are two bus companies that make the run from Rome Tiburtina to Sorrento. The Marozzi bus departs at 15:00 and arrives at 19:00. The timetables on their site show a 15:00 departure for 28 September.
I believe that the Curreri bus departs at 14:00 and arrives at 17:30. However, the Curreri site is down at the moment so I can't confirm that I remember the times correctly. In any case, if you're going to be in Rome for a few days before going to Sorrento, I should think that you'll be fine buying your tickets when you get there.