I'm open to being corrected because I've only been to a few of the restaurants in the top hotels, but I would be very surprised if there are any that require a tie. Of the Peninsula restaurants only Gaddi's specifies a jacket for dinner; everywhere else is 'smart casual" - to me that doesn't require a jacket or a tie. ( http://hongkong.peninsula.com/phk/restaurants_01.html ).

The Mandarin Oriental specifies "smart casual" for all its outlets. ( http://www.mandarinoriental.com/hotel/514000005.asp )

Likewise in the Island Shang only Petrus requires a jacket for dinner. ( http://www.shangri-la.com/en/propert...staurantpetrus )

OK - I'm done with web surfing - I'm sure you get the idea.