We (family of 4) have Interrail global passes and need to travel from Zürich to Lierna (by lake Como, Italy) on June 19th and from Lierna to Innsbrück on June 26th. I know the Italian timetables are slow to get published, but I'm getting anxious because it's only a couple of weeks and I'm still not able to see the timetables except for the high speed trains. I've been checking both Trenitalia and SBB websites. Am I missing something? I would be extremly grateful if someone could help me with finding good routes and timetables for those dates! I'm also a bit conflicted as to wether or not to get reservations (when they are not compulsory). The SBB website is showing extremely high occupancy for some of the connections that I've been looking at for example next Monday (the same day of the week that we will be travelling), although I've learned here that seat reservations are generally unnecessary in Switzerland.