Ahhh thank you for tip about links. I removed it, I don't wanna break the rules on only day two I hope that someone that is living there in Japan now will see this and let me know about their experiences with them. From what I have seen there are 2 types of boats that are available. One is a "tour" type boat with limited seating (just zooms along the water) and often has a guide which knows limited English and points out the different sights. These tours are (for obvious reasons) restricted mostly to the day time. A second type of boat is much larger and holds tables for seating and often features a local band. These boats slowly wind through the waterways affording nice views of the city at night while you have dinner.