There was a big group of Japanese tourists on the same boat, and they took the task of taking pictures very seriously. They were way more organized than us, so while several of them were standing on the stern and taking photographs, the messenger from the inside was periodically popping out and alerting them about upcoming attractions. It turned out; you do not need to understand the language to figure out that something is coming up.
Later I’ve returned to the cabin. At that time we were passing the habituated boats, where people live permanently, and some of them had hose plans in the pots displayed on the decks. It was hilarious that one of the ladies started to point at these plants: bonsai! Bonsai! I can’t tell for sure what her neighbor was replying to her, but looked like she was saying something to the effect: you are out of your mind! What kind of bonsai it could be?! But the first lady did not seem to be convinced :).