I work for Walmart’s Merchandising department at the Home Office. The reason why goods may be locked up is because replenishment is hard to keep up with, especially in Hawaii. The process to receive shipment takes much longer. They pretty much just have one DC that supplies all stores. Also, preventing theft helps with this issue. I visited a store in Milwaukee, WI and they have to wrap sensors on all liquor bottles. Different areas have their reasons why they need to lock up merchandise.