I'm giving this 3 stars b/c i've had better dim sum, but if placed in the context of Vegas, this place probably deserves 5 stars b/c i dont know of any other dim sum places in that city.
The people here actually speak Canto and push around the carts - major kudos.
As far a variety goes, they have the basics. If you need a quick dim sum fix, this place is very decent and again.....this is Vegas so Cathay House is quite a gem.