Advantages: from the order page you can move a SA to a different day/drop, click on the pencil/paper icon.
Disadvantages: Single delivery only, SEPARATE sign in sheet/label required on delivery day
If a product is both an add-on (tied to a member schedule) and a SA, it can be converted from an add-on to a SA. Go to member subscription, Associated add-ons at bottom of page, see Detach button. This would allow you to deliver the product to a site or day different than the member’s CSA subscription.