Food was very tasty. For the buffet they come round with meat on skewers and slice a bit off for you. We had to wait over an hour for the lamb though. I'm guessing that lamb is their costliest ingredient, it rarely appeared while the other types of food were plentiful.
Should note that the HKD 138 offer is weekdays only. We were advised for weekend lunch there is only brunch (HKD 278)