All right, I have a couple questions about going out for dim sum.

I'll be coming to HK with a couple of friends, for whom it'd be their first time in Asia. They're staying to explore a few days, but I've only got a few hours, arriving roughly noon on the 23rd of December and continuing to Shanghai at 9pm, so I figured a meal in the early afternoon, explore the city a bit, then I head onwards to the mainland while they have fun in HK. And I'm asking around here because the last time I've had dim sum in HK was roughly five years ago on a trip with my family.

First, is this timing an issue? (land at noon, clear immigration/customs, train to city, check in, go out for dim sum, total time around 2hr?) From my last trip to HK I'd assumed that dim sum was mostly a morning thing, but I could be wrong about that.

Also, someone earlier mentioned that Luk Yu has good food, but mediocre service if you're not a regular that tips well. Does this mean slow service? Waitstaff attitude issue? Something else? Location looks pretty good otherwise, even if I have to give up "takes credit cards" or "near an MTR station".

I was also looking at was Lin Heung. Is the food good, even if we have to fight for it? I mean, the friends I'm traveling with are the "up for anything type" so it's an experience if nothing else, but maybe we'd rather pass if we end up with OK food at the end of it.

(Those places in particular because they look the most like the place I went to 5 years ago)