We shall be spending a week in Kitzbuhel in August and would like to visit Salzburg for a day. Would the easiest option be by train,and if so should we consider pre-booking our train tickets? Or can these tickets be purchased as cheaply on the day? I have already managed to pre-book our train tickets from Vienna to Kitzbuhel but was totally confused for some reason when looking at the Kitzbuhel to Salzburg day return options. If not should we take the bus, again can tickets be bought on the day and roughly how much will the cost be. Many thanks for any help. We are really looking forward to our trip.