I used it by myself every day. It's a very fulfilling experience, and I highly recommend this shop if you're going diving in Amami (especially looking for sea slugs)!It was also helpful to be able to check availability and make reservations on the store's website, and to be able to get a slight discount on full rentals if you use it for multiple days.Also, since I tend to get seasick easily, I was glad that I didn't get sick because the diving point was about a 10-20 minute boat ride away.On the first day, we had a one-on-one guide.I want to take a photo! Because of this request, they helped us find the sea slug, guided us to a place where we could take photos, and even helped us with the lighting.Since there were no other guests, I was very happy to be able to photograph the same individual to my heart's content.On the second day, I dived with a regular who had made a reservation in advance, and the regular also gestured to me and told me that I was here, and either way, I was able to dive slowly and enjoyably since there were only a small number of people.After the dive, I was very happy to be able to look at photos of sea slugs and other living creatures as well.Also, on the way back, I was given a ride to a nearby shop that I was interested in, and after the activity, I was able to enjoy sightseeing in Amami.(Although Amami Oshima is large in area, there are few buses, so be careful!)I want to practice the camera functions you taught me and try my hand at sea slugs again!By the way…I dived for the first time in mid-February, and when renting a wet boat, I recommend renting the free food vest and boat coat. (I think you could choose at the time of reservation and it was first come, first served)The weather was sunny and warm with a slight breeze, but it got quite cold in the water. During the break, we were able to enjoy hot tea and snacks to replenish our energy, allowing us to continue diving while recovering our physical strength and body temperature.