RINCON - The Walmart Supercenter remodel at 434 S. Columbia Ave. is complete – and, in addition to the physical changes inside, customers now have access to online grocery pickup. For the first time, Rincon residents will be able to order Walmart groceries online and pick them up without ever having to unbuckle their seatbelts. Customers select from up to 40,000 online grocery items, diapers, dog food and more, and choose the best time to pick up them up.