This is an excellent tour we rcommend to anyone. The only downside was that not enough time allowed at the wind mills. The tour of Delft and The Hauge was arranged very well.
The tour was very good. But there were people jumping the queue to board the cruise. Despite several people complaining about it to the ticket checkers, they have not done anything about it. Because of this lot of people were disappointed even before they set foot in the cruise.
The tour was very good, well organised. Make sure you book on to the semi submarine tour. That was the highlight for us since we are not good swimmers and therfore could snorkle in shallow waters only.
If you are visiting Cairns, a trip to the Barrier Reef is a must. If you cant scuba dive then this is the tour for you.