It has been more than a year since the coronavirus pandemic first upended the restaurant industry. Now, with a return to normalcy on the horizon, restaurateurs are celebrating the lifting of restrictions — and worrying about an influx of customers during a particularly vulnerable time. On Monday, Gov. Charlie Baker announced plans to lift almost all COVID-19 restrictions on May 29, allowing restaurants to operate without social distancing or time limits, and inviting vaccinated guests to dine without masks indoors and outdoors. Following the governor’s announcement, Boston acting mayor Kim Janey revealed that the city will follow the state’s plans, lifting restrictions in Boston on May 29.