The cost performance was excellent! I am very satisfied. I am Japanese and my English is at a conversational level. I will review based on that premise. ・I experienced two dives. It was about 9,000 yen in Japanese yen, which is much cheaper than the market price. (The dives I experienced in Cairns, Australia in the past were 15,000 yen per dive.) ・We were picked up at the hotel via a total of four locations, and then there was a 15-minute wait at the pier, but I didn't mind it at all. ・When we got on the boat, there was an explanation of the tour itinerary and a simple explanation for those who have experienced diving. Since it was all in English, I was not fluent, so I could not hear or understand even half of it, but I recalled my past memories and took on the challenge. I think my husband, who was diving for the first time, was anxious. ・It was my second experience diving overseas. I managed to dive while remembering the time I dived in Cairns 10 years ago. There was almost no explanation of breathing, so it felt like a full-body dive. I do not recommend it for first-timers who are anxious about English (lol) ・I was given one bottle of water (a small bottle of water about 300 ml). Drinks are always available on the boat (water, coffee, tea, see photo), and you can drink as much as you like. Also, about two hours after disembarking, fruit was served. It was pineapple and watermelon. ・First dive... The water was murkier than expected, with coral reefs, fish, and sea urchins, but I was fascinated by the underwater scenery. ・Second dive... The scenery was much clearer and more beautiful than the first. I was able to encounter many creatures, including starfish, scorpionfish, crabs, moray eels, and jellyfish. ・In addition to diving, there were also people on the same boat who had snorkeled and experienced underwater walking. After everyone had finished their experience, it was time for lunch. ・We had lunch at a restaurant floating on the sea (see photo). About eight people sat at a table, and we had nine kinds of side dishes, soup, and rice. Drinks were charged separately. It was a line dish that suited my taste (as a Japanese person). Please note that it is spicy and herbs that are unique to Vietnam are included as a matter of course.・After lunch, we headed to the pier and returned to the hotel. ・We used the restroom on the boat once. The door wouldn't lock, so I asked my husband to watch the door. Obviously, you shouldn't expect a sanitary environment (lol), but it was cleaner than I expected because it looked like it had been washed with seawater, and since we were going into the sea to dive anyway, it didn't bother me that much. ・Reasons why I rated the safety measures as "average"... 1. I felt that getting on and off the boat and going to the restaurant required core strength and motor skills. 2. The explanation of diving itself was simple. ・There were mostly Koreans on board, other Europeans, and us Japanese.