Sorry for yet another topic on Milan to Interlaken. I am just a bit confused. I have bought a ticket for Milan to Domodossola, and plan on using my Swiss pass for the rest of the trip. I am trying to make reservations for Domodossola to Spiez on Rail Europe but it says no route found. So my question is after Domodossola will I need to move from my seat if someone else has it reserved? Will I be ok without a reservation for the trip from Domodossola to Spiez and Spiez to Interlaken?
Thank you.