Pop-up shops filling empty storefronts across the U.S. Pop-up shops filling empty storefronts Due to the COVID-19 pandemic, we're starting to see pop-up shops appearing year-round to fill empty storefronts. LONG ISLAND - The holiday season is usually the time for pop-up shops at the mall, but because of the COVID-19 pandemic, we're starting to see them all year-round. My Cookie Dealer, known for its half-pound delicacies offered in a variety of unique flavors, has expanded. Now instead of just shipping and delivering orders, owners Karen and Juan are selling the cookies and other savory treat...