The few times I've eaten outside in the evening the last few months, I've noted how whichever companies that make those outdoor space heaters are probably experiencing a huge boom, as every restaurant capable sports a new or larger outdoor dining area, and even some that aren't capable get public sector help to make it so (e.g. in my city they closed the major downtown strip to auto traffic to allow outdoor dining areas to take up the entire sidewalk and some of the road).