✔ 最佳答案
Don't go to Vancouver in Winter (Nov to April) coz there get dark at 4pm, also it's cold during winter. So, the best time is of course July and Aug. But it should be fine between June to Sept.
Places should visit in Vancouver: Lion Gate Bridge, Grouse Mountain (ski moountain), Whistler (world famous ski mountain, 2 hours driving from Vancouver), lots of Chinese malls in Richmond, Unviersity of British Columbia, Simon Fraser University, Granville Island public market, Robin street (shopping area), Stanley Park, Victoria Park, Gas Town (very near China town), Metro Town (biggest shopping mall in Vancouver), Richmond Fisherman Wharf.
If you have time, you can also visit Victoria Island (need to take 1 hour ferry to there), or Banff in Alberta province (~10 hour driving from Vancouver).
If go to Seattle, it will be 2 to 3 hour driving from Vancouver, then should visit the Microsoft, Flight Museum.
Since fly from HK to Vancouver is ~12 hours, I will suggest to visit Vancouver 7 to 10 days, or even 2 weeks.
Tell these names to your friends in Vancouver and he/she should know these places.
I have visit the west coast of USA/Canada a couple of times, every time I go there I will go Vancouver, Seattle, San Francisco, San Jose, LA, and Las Vages, and sometimes San Diego. These are all the famous cities in the west coast. SF, LA, LV is a lot of fun especially LA and LV.