If the products are on the pallets we can unload them at the same time and the driver only need to wait for 15-30 mins then take the empty container. If the products are on the ground and need to hand unload, they can come at the same time. However, we need to know what time the container will be drop, after confirm you can send the driver to your warehouse and drop two container. We will send you e-mail once they are empty. Best regards~