I have 2 to 3 free days, and would like to see the scenery in Austria and travel from Vienna to Innsbruck and back in July 2013 by rail. Do I need to reserve a train ahead of time? Should I reserve it myself or have a travel agency or concierge service do it? Round trip reservation at the beginning? First or second class? Can I leave a heavy suitcase in a locker in the Vienna airport and travel with my light bag? Perhaps I need the 3 days? Any advice you can give me is helpful. Is Innsbruck the place to on the route, or should we stop in Salzburg instead? I'm a musician, but like scenery and music equally. Three days maximum is all the time that I have.