There are two interesting small business in this area. One is they sell fish food pellets for only ¥100. No wonder there's a lot of big fish in the dock because tourists would feed those fish. The second one is the good old camera business where they will take a picture of every tourist before they go inside the boat then sell the printed copy to them after they go back from the cruise. Don't worry because it's alright if you don't buy your copy. A copy of a photo costs about ¥1,000.