canopies and awnings. magine the scenario, if a public house is a big game on television, and heavy rain outside. Smokers will probably hate the fact that they get wet outside shelters can not accommodate everyone. It May be a little feature that can often lead elsewhere.
Of course, all this can be determined by what is offered is in the hands of managers to cover partially open.
Another issue related to access location. Smoking shelters put in the wrong place and you'll probably find a street procession through the area beating a smoker you will quickly they are not. The increase continued to open doors and smoke-free soon regulars will start to leave and seek alternative sites.