I am confused about the differences between the Passes. We are coming from Innsbruck to Interlaken. Is that part of the Swiss Pass since we are traveling into Switzerland or do we buy the ticket separately? I also understand that I buy the train ticket from Venice to Salzburg on the obb site so is that part of the Swiss Pass too? We are going from Innsbruck to Interlaken, seeing Jungfrau and Shilthorn while in Wengen, then taking going to Ballenberg from Interlaken, probably by boat, then Ballenberg to Lucerne, and then Lucerne to Zurich to fly home. So should I be buying the Swiss Pass or the Regional Pass? I just need a one week pass. Also, I think I can only buy tickets 90 days ahead of time. Am I right? Do I buy the Pass and then make reservations? Is that how it works? Thank you.