A little odd that at the end of the walking tour we were hearded onto the boat with other tour groups who received a meal (knowing that we did not receive one, we were shuffled upstairs on to the colder deck). After a while our guide let us go inside.
It was a wonderful day for sightseeing. However, the person that wrote up the ad for this trip should probably do the tour first. Most German trains do not have a snack bar and toilets are pretty scarce. You would need to be on the I.C. E. for what was written up.