If you don't request pick-up and drop-off separately, they won't come to pick you up, so you must apply via LINE or email if you need it. Otherwise, you'll have to find the tour company yourself. The tour details aren't very extensive, but there's a first point and a second point. After about a 40-50 minute boat ride, you'll snorkel in the middle of many coral reefs at the first point. You'll snorkel here for an hour, and then at the second point, it seemed to take about 15-20 minutes. You'll go to a fantastic island where you'll have 30 minutes, but you'll need to return the rented snorkel gear. Expect fewer fish than in Southeast Asia, haha... Water and food are personal items, so be sure to bring your own water and drinks! The sea is beautiful. My father is over 65, and I couldn't get a doctor's certificate, but I strongly recommend everyone bring one. You can't do the snorkeling experience, but you can ride the boat. The main customers are almost exclusively Japanese, and only simple English is spoken, so if you're new to snorkeling, this tour might be a bit challenging. I'm leaving this information because there's so little tour information about Ishigaki. I hope it helps everyone 🥹