Itinerary plan:

6/12 – Flight to Munich From IAH

6/13 – Munich

6/14 – Munich

6/15 – Day trip from Munich: Neuschwanstein

6/16 – Early trip to Vienna

6/17 – Vienna

6/18 – Vienna

6/19 – Vienna; trip to Graz in the afternoon

6/20 – Graz; trip to Salzburg at the end of the day

6/21 – Salzburg

6/22 – Day trip from Salzburg: Hallstatt

6/23 – Early trip to Innsbruck

6/24 – Innsbruck/Mieders (alpine coaster); trip to Munich in the afternoon

6/25 – Flight to Houston