We visited on a weekday during the Obon festival with a family of four, including an elementary school student, a 2-year-old, and a couple in their 30s. We made a reservation in advance at 11:00 and went to the reception around 10:45, but it was crowded so we couldn't enter until 10:55. The location of the dolphin pool where the dolphin show is held is very good, and the building is stylish. We were very satisfied with the variety of products in the souvenir shop (it is several times larger than the souvenir corner at Kaiyukan). The toilets were clean and frequently cleaned, and the nursing room was clearly marked as off-limits to men, so we felt at ease. Even 40 minutes before the dolphin show, the seats were pretty full. At the start, many people were standing in the sun. It was very hard for the children to sit and wait for 40 minutes outside, so we went to buy ice cream and drinks on the way. It was good that you can eat and drink outside. We sat in the front row for the 13:00 show. We were able to sit in the shade of the roof that time, but I think the afternoon sun is quite strong (although I think the location for the sunset dolphin show is the best). The outdoor aquarium tour in midsummer was quite hot. There were some features that let you see the penguins up close, and feeding events for otters, seals, penguins, and sea lions, but it's tough if you don't take measures against the heat. There were a few people watching the event in the front row with parasols, so you couldn't see the people behind. There were also events such as a pearl-picking event, a speed lottery where you could win an otter stuffed animal with no losing tickets, making snow globes, and filling up with figures, so my elementary school-aged child and toddler had a lot of fun. There are photo spots both indoors and outdoors, and when it's crowded, there are waiting lines. The restaurant Setouchi Kitchen in the building has a lineup of menus with dolphins, otters, and hammerhead sharks as motifs (around 1,000 yen). However, when we entered around 1:20 p.m., many of the popular menu items were sold out. We ordered dolphin curry, dolphin children's plate, dolphin shaved ice, turtle and crab pancake plate, scalloped hammerhead shark negitoro donburi, and shirasu donburi (6230 yen). When you purchase the meal ticket, the order is automatically sent to the kitchen, and when it's ready, you take the meal ticket and go to pick up the item. I wanted to eat the dessert menu after eating the meal menu, but the order was sent at the same time, so I quickly ate the curry and ended up eating the melted shaved ice (tears) The pearl extraction event costs 1000 to 1200 yen to extract the pearls themselves, but it costs about 3000 to 4000 yen to make them into necklaces or key chains. If you participate with two people, it's 1000 yen per person! I was told that, so I participated with my mother and child, but I ended up making it into a necklace, so I paid 8000 yen. I recommend the otter speed lottery on the second floor, where you are guaranteed to get an otter stuffed animal for 1000 or 1500 yen. Even the lowest 3rd prize is about 40cm. If you're lucky, you can get a giant stuffed animal. During our 5-hour stay, I saw someone with a large 2nd prize stuffed animal, so I think it's quite easy to win (we got 3rd prize both times). There is free Wi-Fi available in the building, and it worked without any problems. I was told that you could get a guide to the building on LINE, but the AI was only 1,000 yen and wasn't very useful. The total cost was just under 30,000 yen, including admission fees, meals, souvenirs, event participation, and parking fees.