Any promotions on your order will be applied to the first shipment, and so on, until the full value has been used. Your provided payment method will be debited as necessary when the value of coupon(s) has been used.
For example, a partial Free Shipping coupon of 5.00 on an order with 20.95 shipping would charge available merchandise/taxes and 15.95 shipping cost.
Promotional coupon(s) include (but are not limited to) the following: Buy One Get One Sale, Free Shipping, % Off Sale