Is the Amica fare all the time or just a certain number until they sell out (Trenitalia). Also, IF we buy our train tickets before we leave for Italy (and Austria, too) I am assuming we have to choose a certain departure time. If we change our minds to go on a later train, can we do that? Is there a penalty for the change on Trenialia or Bahn.de? Also, the good fares I am finding on Bahn.de now (for Austria) - will they be available in country or do I need to buy them now? Another concern: I looked up the fares on Austria's train line (oebb.at) to compare to Bahn.de and Bahn.de wins. However, when we are at the train station in, say, Innsbruck, can we buy Bahn.de tickets or only Austria rail tickets? The tickets seem to be for the same exact train and class but different fares.