I'm sure you are aware it isn't just snakes that would be closing temporarily. There are several state governments contemplating closing restaurants and bars statewide. I know Ohio, Tennessee, and Kentucky are all already walking that line. I'd guess Canada isn't far behind those callings if they aren't already. Singling out S&L isn't too fair here. People are welcome to correct me if I'm wrong here.
You do know that (1) most SnL locations are still in Canada, not the US. And (2) the govt is working on financial assistance for SMEs like Snakes in the US, right? So closing for 2 weeks or even more is not going to be devastating if they know how to get assistance.