I need to get from Fussen to Innsbruck on Tuesday 9/18 via public transportation. I've read where the best way is to get bus 74 to Reutte then the train to Innsbruck. Could that whole trip (both bus and train) be covered by a Bayern ticket? If so, can the bayern ticket be bought online ahead of time and if not, can I buy it in Fussen? If not by Bayern ticket, can I buy both the bus ticket and train ticket online ahead of time? If so, on which websites? Thank you.