Most of them has free one drink service.
There are 6 piers.
You can also get off at the other pier and enjoy hiking.
Cruising might cancel when there is heavy rain.
Shop moves very slowly.
Lake Kameyama Koyo Cruising (亀山湖 紅葉狩りクルーズ) offers the best Koyo tour around Tokyo. It is about 40 min. cruising which travel to the deep side of the lake. Those spots are inaccessible by walking or car. There is two cruising, Inokawa river cruise and Sasagawa river cruise. This video is Sasagawa river cruising.
Tourist Info.
This event happens around middle of November to the beginning of December.
You can ride at the rental boat place.
Time: 10:00 11:00 12:00 13:00 14:00 15:00
Admission: 1000 yen.
There are parking.
There is restroom at piers.
Access
0. at Kisarazu Station.
1. use JR Kururi Line to Kazusa Kameyama (1 hr. 12 min.)
2. walk south (20 min.)
1000 JPY
40 min
New Wave Samurai Movie. 
映画好き集まれ！ 
Most of them has free one drink service.
There are 6 piers.
You can also get off at the other pier and enjoy hiking.
Cruising might cancel when there is heavy rain.
Shop moves very slowly.