I have a 5-day Swiss Pass.
I want to go from Milan Central Station to Lucerne Station with a Swiss Pass, do I need to purchase a ticket?
Conversely, I want to go from spiez Station to Milano Central Station, do I need to purchase a separate ticket?
Conversely, I want to go from Milan Central Station to Lucerne Station with a Swiss Pass, do I need to purchase a ticket?
If I have to buy it, where should I do it?
And let me know if I need to change trains.