We will be taking a boat that ends in Budapest, Hungary that had previously stopped in Vienna, Austria. We will travel back to Vienna by train for several days then by train travel to Austrian, German and Switzerland locations. If I activated our Flex Pass when the boat stopped in Vienna will the Flex Pass be accepted on trains moving between all four countries mentioned?
My first impression was that the pass would not be accepted on the Budapest-Vienna leg because Hungary does not have a common border with Germany and Switzerland. On the other hand Austria has a common border with all of the other countries. If the pass will work only in Germany, Austria and Switzerland is there still a three country Flex Pass available?