yap when i go to coffee shop,
i saw non smoker sit on the smoking area and
just i ask their permission to sit with them.
If they agree, i sit there and start smoke
If they dun agree, i told them this is smoker area
pls move to other table, if they dun wan move
i approch the owner to tell them
this the way to train the owner to tell
next time ask the ppl before they sit
hahaha 
because smoker is the highly tax payer to govt.
so we have our own rights to say this 