Traveling from Prague to Munich, to Zurich, to Lucerne (2 days), to Interlaken (3 full days) to Geneva (4 full days with 1 day to Mont Blanc) to Paris (4 full days with 1 day to Luxembourg) to Barcelona.
my question should I buy all three of the following passes:
europass flex global
Swiss travel pass
top of Europe Jungfraujoch pass?