It’s baseball season, and fans have clamored to get back to normal, to a place where the wave used to mean something other than the next surge of the coronavirus. Major League Baseball is heavily promoting inoculations, and stadiums have become a new line of demarcation, where vaccinated sections are highlighted as perks akin to V.I.P. skyboxes. In Washington, Gov. Jay Inslee recently announced that sporting venues and churches would be able to increase their capacity by adding sections for the vaccinated. Some businesses — like gyms and restaurants — where the coronavirus was known to spread easily are also embracing a reward system. Even though many gyms have reopened around the country, some still haven’t allowed large classes to resume. Others are inclined to follow the lead of gyms like Solid Core in Washington, D.C., which seeks proof of inoculation to enroll in classes listed as “Vaccine Required: Full Body.”