For US customers: they don't accept US debit card, US dollar, and any type of credit card! Although we paid with credit card twice with no problem in last three weeks, this time they just didn't accept it. They didn't even accept US dollars. If you don't have enough cash with you and don't want to bother using the paid ATM outside, don't go!
Food was okay. Can't complain for service. But I'm sure there're tons of nice hot pot restaurants who would accept credit card, which makes life much easier!