We didn't eat there because the person at the counter, J. Jo, refused to accept the coupon we have (buy one and get one free). He only wanted to give us 20% off even after reading the coupon for one minute. He was very rude and said "You want to eat or not?", "Have a nice night, please leave".
I believe they used the Entertainment to lure customers and then refuse to honor the discount. Probably most of the customers will accept the 20% instead of leaving the place.