Chairman is good but booked up like crazy. I think it's been 10 years or so since I went. Flower Drum in Wanchai is pretty good too.
Oriental? I've no idea to be honest. I think it's more an American thing, but it's spread out now. I don't mind being called Oriental, but people keep telling me that it's offensive.
Mainland Chinese are very much notorious for wanting to eat Chinese food everywhere they go. I've been on conferences in Bologna etc, and you'll find they all went to eat at the Chinese restaurant rather than the local restaurants - pasta and ham isn't really that 'exotic'.
All British are very much notorious for wanting to eat British food everywhere they go.
It seems your parents have come & gone and found your post today!!