請幫我看一下21天德國西南行程 - 德國

以下是我第一版的行程表，請前輩們幫我看看提供一點建議！
另外想請問這樣的行程我應該先準備幾天的Rail Pass會比較正確？
是只要會利用到火車就應該先買票嗎？..先謝

Date Day Region Lodging
8/3 (Fri) 1 Taiwan-> Frankfurt Frankfurt
8/4 (Sat) 2 Frankfurt -> Mainz -> Klon (KD line) Klon
8/5 (Sun) 3 Klon <->Bonn Klon
8/6 (Mon) 4 Klon -> Marburg -> Heidelberg Heidelberg
8/7 (Tue) 5 Heidelberg Heidelberg
8/8 (Wed) 6 Heidelberg -> Stuttgart Stuttgart
8/9 (Thur) 7 Stuttgart <-> Metzingen -> Baden-Baden Baden-Baden
8/10 (Fri) 8 Baden-Baden -> Freiburg Freiburg
8/11 (Sat) 9 Freiburg <-> Triberg Freiburg
8/12 (Sun) 10 Freiburg <-> Titisee Titisee
8/13 (Mon) 11 Titisee -> Fussen Fussen
8/14 (Tue) 12 Fussen <-> Garmisch-Partenkirchen Fussen
8/15 (Wed) 13 Fussen -> Munchen Munchen
8/16 (Thur) 14 Munchen -> Berchtesgaden Berchtesgaden
8/17 (Fri) 15 Berchtesgaden <-> Salzburg Berchtesgaden
8/18 (Sat) 16 Berchtesgaden -> Munchen Munchen
8/19 (Sun) 17 Munchen -> Nurnberg Nurnberg
8/20 (Mon) 18 Nurnberg -> Rothenburg Rothenburg
8/21 (Tue) 19 Rothenburg Rothenburg
8/22 (Wed) 20 Rothenburg -> Frankfurt Frankfurt
8/23 (Thur) 21 Frankfurt -> Taiwan SWEET HOME !!!!!

--
╔═╗═╗╔══╗ ╔═══╗╔═══╗╔═══╗
║█◢◤║║██║ ║███║║██◣║║███║
║██ ║║██╚╗║█▋█║║█▆◣╝║██▅╝ ── ●
║█◥◣║║███║║███║╚◢▅█║║██▅╝ ／○
╚═╚═╝╚═══╝╚═══╝╚═══╝╚═══╝ ─▄） nyctenvoy


--