We found it difficult to avoid " smoke" at the SL. The bar was always smokey and if you wanted to place an order at the bar you had to brave the smog. I refused to stand at the bar and ordered from the side.
There was no problem at breakfast though.
Smoking in the parks is a major problem and anywhere else you choose to walk come to that - we always seemed to have the smoke from the smokers in front of us blowing back into our face UGH. We found this even when walking from our lodge in SL to the main building.
We ate in the Plaza gardens on several occassions, first time in the conservatory, no prob. Second time in a none smoking area but adjoining the smoking area (UGH) from then on we made sure that we requested a table as far away from the smoking area as possible, that did work