Is it necessary to book ahead of trip to save money or are prices and availability not a problem to buy ticket on the day of travel on high speed ferry? Also will need to travel by ferry from Capri to Naples on a separate day. Any advice on these two scenarios much appreciated! Thanks!
Advance tickets are not necessary, just purchase at the dock when you get there. I would get weird looks just for trying to buy a ticket for later in the day. Unless it’s the highest of high seasons, it does not seem to be an issue.
No need to buy in advance, not sure there are any discounts anyway
Here is schedule and rates if you don't have already:
https://www.positano.com/en/ferry-schedule?from=capri&to=napoli#