Excellent Indian canteens throughout the place. Nigerians will sell you smack, too. You may find a decent flying carpet. But don't use Indians and Nigerians for your tailored clothing.
Avoid the pitfalls of shopping while white.
I just received the suit I'd ordered for my teenaged son (he went and got measured for it). It was a Wagjag, $399 for a 100% British Wool suit, 2pc, with shirt as well. Valued at $1500. I thought, what a deal! It arrived, and felt cheap. Took it to the dry cleaners to get it pressed, they said it is NOT wool. It also looks a little too small for my son (pants shorter than they should be, and a little tight in the bum). Am currently trying to get in touch with them and Wagjag. Shouldn't all suits, even if custom-made, have something on them saying what they are made of?
There's every reason to warn against particular tailors, but no need for racism from anyone here.
I've had things done by Raja in the past, who are an Indian Hong Kong firm who also do the flying visits thing, and never had any problems, in fact they have always been excellent.
I think W.W. Chan is one of the rare gems among the so-called Hong Kong tailors. I like to try a few tailors and read some good reviews of them here on SF. I tried them out last time they were here in NY annd purchased 2 oxford shirts and a herringbone suit. Really nice quality and finish although I had to follow up with the delivery a few times, I was a happy camper when I received the items in good condition.