Japanese food self-service brought sake, and they drank too much the first two times. They went to the waiter and said that one person was limited to ten pots of sake. My friend didn't drink, so I drank 20 pots and drank too much. Then three people went, and the waiter said that one person was limited to five pots of sake. Those two people didn't drink, so I drank too much. The last time I went, sake didn't help myself, and I never went there again.