All people have similar faces (you may end up confusing yourself) & lack of English (Haven t visited HK yet) No offense meant.
Hong Kong is divided into 3 main parts; Hong Kong Island, Kowloon, and New Territories. If you stay on Hong Kong Island where the main business district is, you will have no problems in your daily life speaking pure English.
I would prefer Singapore over Hong Kong any day. Seems more peaceful country, but heard Hong Kong is more vibrant and interesting.