I can't believe I'm wading into this mess...
The point alot of people seem to be missing is that the main (legal) reason for banning smoking is NOT to protect the health of the people that choose to go there, but to protect the health of the workers. It's mainly an enforcement of OSHA regulations.
In California, if you don't employ anyone, then you can allow smoking in your establishment. I was in SF last winter hung out at a small neighbourhood bar that was only staffed by people that had bought into the bar. Technically, they were all part owners so patrons could smoke there.
I'm not sure if that loophole exists here.
I know that people are going to argue that workers choose to work in places like the 930, etc. That argument is flawed on so many levels, but I'll let someone else take up that torch.
And as already stated, the ban will go into effect in a few months regardless of any complaining. Smokers - puff away while you can. Nonsmokers - hang in there for six more months.