Redeem tickets quickly and easily. After redeeming the ticket, you will receive a paper with detailed instructions on the functional areas in the park as well as the services included in the ticket, so it is very convenient to experience.
The onsen here is not too hot, so it is suitable for both adults and children. There is an 80cm, 1m2 pool. There is also a sauna in the outdoor hot bath area, so you should experience it.
The ticket also includes an indoor onsen, but in this area, bathers are not allowed to wear clothes, so I don't see many people in this area.
The water park area on the lower floor has a wave pool, lazy river, etc. suitable for children. The lazy river is not too long due to limited space, and when I entered (around 5pm), the wave pool was no longer visible. The stone floor in this area is very painful to walk barefoot, so wear slippers.
Food is sold on the first floor, there are Korean, Japanese, burgers, etc. but they are expensive, so I didn't try them.
In general, in my opinion, buying tickets after 4pm to experience is enough.