BBQ Box Labor Day Coupon: Save 30%! Posted by Hello Subscription on September 2, 2017. Subscription Box Coupons & Deals / BBQ Box Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Through 9/4 save 30% on your first BBQ Box with coupon code LABORSAVE! A sauce/marinade, seasoning/rub, a tasty edible treat, a wood product, and a recipe delivered monthly. It doesn’t get much better than that.