Low bridges (high water level) on the river cruises are a common occurrence (which is why the boats are constructed with a lowerable wheelhouse). It sometimes happens that even that is not sufficient and a river cruise has to be interrupted because there is not enough clearance. On the cruise I took in 2010, we made it under all the bridges, but the tour behind us could not and the passengers were taken by coach to the other side of the low bridge and were parceled out among 2 other boats that had space available that were farther along (mine was one). Another feature of the cruise boats is that they can be lowered in the water (take on ballast), even to the point where the water level is above the floor of the lower deck--the windows on that level are sealed to keep out the water (so I have been told--we didn't have to do it).

My 2010 cruise was with Avalon Waterways, which is now part of Globus. It was fabulous! I do have a few photos of the canals in Amsterdam: https://www.flickr.com/photos/8712554@N02/sets/72157625690807750/.

I did a similar cruise from Budapest to Amsterdam in 2010 on Avalon Waterways (now part of Globus). It was in June, though, and the weather was excellent. I used a Nikon D50 DSLR with their 18-200mm VR zoom (first version) and it served me very well. I did not take a tripod--most interior places (cathedrals, etc.) wouldn't allow one to be set up, anyway. I learned early on in photography how to make use of structural features to steady my camera and it was useful experience. My photos of that cruise are on Flickr®: https://www.flickr.com/photos/8712554@N02/collections/72157624729863909/.

Enjoy your trip!