Here is the itinerary, all by train:
Day 1: from Berlin early in the day to Rothenburg ob der Tauber in time for city tour and night watchman's tour, overnight there
Day 2: Rothenburg to somewhere for Rhine cruise and Marksburg Castle, possibly also Rheinfels Castle, overnight somewhere or on train
Day 3: must arrive in Kiel by 4:30 pm, can be earlier
It seems we should be able to get a Rhine cruise and a tour of at least the Marksburg castle in there on day 2, but I can't figure out the logistics. Person is musician traveling with instrument plus suitcase, so it seems he must check his luggage somewhere before the cruise and the tour because he doesn’t want to schlepp all this stuff around the castle. This implies he needs a round-trip back from wherever he started, to get the luggage. Is this correct, or am I missing something?
Any suggestions for best way to do this Rhine cruise and castle tour? It doesn't matter where day 2 ends (Frankfurt, Koblenz seem the most obvious) because trains from there can get to Kiel on time for day 3. Thanks in advance for any help.