Zan,,世界上這樣的城市（人群）很多，倫敦，紐約，舊金山，悉犀，墨爾本，溫哥華，多倫多，胡誌明市，金邊，曼穀，，，

Vancouver:

some family each weekend there is a house party; young couple will receive several party  invitation each weekend,,,,

Some people are just lucky,,,LOL