Can a UNICOCAMPANIA U3 daily ticket be used to get from the cruise port to the Naples train station and then be used for stops in both Pompeii and Ercolano? The U3 ticket does not list Ercolano on the U3 list of cities.
If the Unicocampania daily U3 ticket includes unlimited use of the Circumvesuviana, then you can use it for both Pompeii and Ercolano. Have never used a daily pass for transportation within Naples, so not sure whether it would also cover the trip between the port and the train station. You might look at Rick's new cruise port guidebook to see if it answers your question.