Friendly staff and well organized. The boat stops at many attraction points for taking pictures and the guide lady helps taking photos with instructions of quite professional photographer style. As she said, for the Instagram :D. She also explained the building histories with jokes occasionally. The captain’s driving skill is good too, we felt excited but not scared. The boat speed was fast for a short time with rock music then changed to slower speed, let us have a break after screaming during the fast move :D. Absolutely wonderful experience!