Once Upon a Book Club Veteran’s Day Coupon: 15% Off First Box! Last updated by Brandy on November 10, 2017. Subscription Box Coupons & Deals / Once Upon a Book Club Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Once Upon a Book Club has a 2 day sale! Now through 1/12 use coupon code VETSDAY to save 15% off your first box!