Rip off. We started the "tour" with no audio. My wife and I, and most of the others, stayed on the…read morebus through stop six, and then just bailed. No explanation for the lack of audio, no apologies, no nothing.I walked into one of their tour locations and informed the guy of the issue, thinking he would offer some sort of concession. If I didn't like it, too bad, complain to corporate. Later, we needed a ride back to the Centraal station, so since we had paid for this, we decided to use if for transportation. We rode from stop seven to the beginning of the route. This time there was audio. Very nice. However, when we arrived at the port, it was 5:00 pm....closing time. Get off we were told. That was the last trip of the day. Well, I paid for 24 hours. When I paid, I looked at all the literature for hours of operation...not on their paperwork...purposefully I would suppose. We got booted. Basically paid $29 euro each for an Uber around the city. Horrible experience. Worse, our hotel concierge strongly discouraged us from taking this excursion, and we didn't heed his advice. So heed mine. Stay away.