I simply finish my meal and then light up a cigarette. What are they going to do, evict me before I pay for the meal?
If someone is stupid enough to call the police, I am long gone before they could ever arrive.
For the smoking customers in the restaurant, they usually cheer me for having the balls to stand up.
For the non-smokers who get upset, well, I no longer even pay attention to them. They made their choice to eliminate designated smoking sections where people could segregate themselves and not be smoking around them.
Good for you! We smokers have rolled over and played dead for too long.