Customers packed the Walmart Neighborhood Market late Wednesday afternoon at Merrill Station in Arlington. Parking spots filled quickly in front of the store at 8011 Merrill Road. The market was one of three that debuted Wednesday morning in Jacksonville. The other two are in Mandarin at 10550 Old St. Augustine Road and in Middleburg at 2570 County Road 220. The stores are about 40,000 square feet in size and offer groceries, pharmacy services and household goods.