I will be spending a couple of days in Venice before leaving for a cruise from the Port of Trieste. What’s the best way to get to Port of Trieste?
Train. Takes 2 hours and cost 15 EUR. Train just about every hour.
https://www.trenitalia.com/en.html
Another option that would take you directly to the pier is Go-Opti Shuttle. They list their fares for this route as low as 17 euros.
https://www.goopti.com/en/