I have already received the ticket when I enter the door, and then I will enter the place where I take a shower and change clothes, and finally I will go in through another door after changing clothes.

After entering, there will be many pools, which are big enough to accommodate more than a dozen people. Usually couples are inside, so others are embarrassed to go in again. All sizes are available. You can change the swimming pool at will, so you don't have to pay naked, and you don't have any money with you.