In your hotel you should find different types of restaurants atleast 2, they usually cater to local(cantonese) and foreign(American if it's a American hotel, or French if it's a French hotel).

For a different kind of experience you can go to the Hopewell Center "revolving" restaurant ( Revolving 66) On HK island, It's a circular building where the restaurant is on the 66th floor and you take a elevator which is "outside" the building.

Lan Kwai Fong district on the HK island has many many restaurants/bars from all parts of the world.

HK is a very safe city, any time of the day/night people are moving.

Enjoy.