My pickup was confirmed by telephone to be at 9:30. I waited from 9:20 to 10 but none of the busses was for this tour. So I took the very crowded and slow local bus for 1.50 EUR per direction. The audio on board was mostly prerecorded and only in English (not in German).
Nice harbors, bad execution.
The tour itself was quite informative though it's just a pre-recorded commentary. However even though I had confirming pick up time the day before they forgot to pick me up until I phoned 5 mins before the tour was due to start after waiting 25 mins to be picked up, and it then still took another 15 mins to be picked up. The cruise did wait for me for me to arrive.