Tourism took a big hit in Maine during the first year of the coronavirus pandemic. But this summer could be different: many Americans are newly vaccinated against the virus and eager to enjoy the state’s rugged charms. But there’s a big question hanging over this tourism season: will Maine have enough workers to serve up all the lobster rolls, craft beer and other attractions that normally draw so many visitors here? The state’s hospitality industry is one of several that have struggled to find workers this spring, so much so that Gov.