For the time being Missouri has a pretty even handed smoking law. Bars and restaurants get to choose their preference. Some communities have tighter standards but a smoker can drive a few minutes and find a place that allows smoking. I'd say restaurants are two-thirds non smoking, but a couple of places have spent money to make smoking areas that work well. Ryan's, a buffet style restaurant, has a glass partitioned smoking area with large ceiling ventilators that pull out the smoke quickly. You can sit outside the glass in th non smoking area and not smell anything. Signs on the wall inform you that you service will be by "tobacco choice" employees and their availibility (or not) may affect your service. Since its a "grab your plate and serve yourself" buffet I don't see it as an issue. Tipping to have someone say Hi and bring you hot rolls is a pain anyway. So in two strokes they quell both primary issues. Second hand smoke and employees subjected to it.