Usually I'm pretty well-versed in train reservations, especially Trenitalia and SBB, but I'm trying to figure something out. My husband's family and I are traveling from Arezzo, Italy to Lucerne on May 25th. We'll connect through Florence, Milan and Arth-Goldau.
Here's the thing - we have Tageskarte Gemeinde for Switzerland (a day pass) so when we travel from Milan to Arth-Goldau, we only actually need to buy a ticket across the border from Milan to Chiasso, because the rest of our Swiss travel is taken care of. When we purchase Milan to Chiasso, that includes a seat reservation. I'd like to extend the reservation for the rest of the journey to make sure the 5 of us can keep sitting near each other, but I'm not sure on the Trenitalia or SBB websites how I can buy just a seat reservation, not a ticket for the whole time.
I know I can't buy this until 4 months ahead of time, I need to wait a little longer - but just wanted to check if anyone knew how to buy a ticket from Milan to Chiasso but a seat reservation for the rest of the journey (preferably the same seats).
An alternative would be to buy the Smart fare when it comes out because it would only be 22€ for the whole journey (and then would include a reservation for the whole thing) but if I just need to spend 9€ + the cost of a reservation, that would be preferable.