Yung Kee with and without "locals"
I've had two types of Yung Kee experiences - great and terrible! It appears to me that the trick to a great Yung Kee experience is to go with a mandarin speaking local chinese and have them do the ordering for the table.
With locals orchestrating the meal and doing the ordering the meals have been awesome, dishes overflowing and rich with the promised ingredients, excellent service. During one meal there was a question as to which fish to prepare for our table and the waiter showed up table side with two live fish in oversized plastic bags so that our host could make our selection. Meals have been well paced and not at all rushed. All in all very enjoyable great experiences.
"round eyes" and even Mainland chinese dining on their own are apt to have a less than desirable, "tourist" experience similar to the one Swiss describes. Meals that I've had with other travellers (and no local host) have been okay to poor with both food and service lacking.
YMMV, but personally I would NOT bother to go to Yung Kee again without a mandarin speaking local. There are so many great restaurants in HKG, why take a chance.