The following adjustments have been made to retail orders
If customer with name of "Retail" selected then the order is in Retail "override mode", nothing you do when you add items to an order can make it a non-retail order unless you manually turn it off being a Retail order at the Retail switch.
If you set a product section as a Retail section, it will now allow you to have mixed retail/non-retail items in the order, but if it detects a non-retail item in the order it will show a blue notification that it's turned off the Retail switch due to it being mixed order.
If its a retail order then you will not need to enter a ready by date