My department threw me a farewell party on a traditional Japanese boat - yakatabune. Kinda like a old-school dinner cruise.
The boat had tatami mat seating and traditional Japanese food and karaoke! It was also a bit short.
It seems all the yakatabune ships anchor at Odaiba before heading back. It was a cold night but that made the views very clear. It was very pretty.
Overall, a nice, fun night.