Marc Malkin Senior Film Awards, Events & Lifestyle EditorIt may not have been a full Broadway production, but the Roundabout Theatre Company nonetheless knows how to welcome live theater back to New York City.The 56-year-old performing arts organization hosted its 2021 gala, “Curtain Up, Light the Lights!,” in Central Park’s Rumsey Playfield on Monday night. It marked one of the first large-scale events to take place in the park since the pandemic.