Few Wal-Marts have wet labs. Most if not all have a send-out service. Wal-Mart's send-out service is handled by Fuji, who does C-41 development. Turn-around time is 3-7 days. E-6 dropped off at Wal-Mart, at least here in the midwest, is sent to Dwayne's by Fuji. Add 1 week for E-6 service.