Our guide Jacek (Jack) really made the day great.
The day started off a bit rainy (drizzling only), and so it turned out we were the only people on the tour, however the tour still went ahead and we had a personalised tour where we were driven out by Jack in a very comfortable car.
What really made the day special though was the opportunity to talk with Jack about Polish politics, history, the amazing history of the families who lived in the castle, modern Polish music, insights on the difference in culture between Krakovians and Zakopane highlanders and all sorts of other interesting topics.
A really great day. The boat ride itself goes into Slovakia (so you can claim you've been to another country).
An easy day trip from Krakow, and certainly worth doing.