PLONK Holiday Coupon: Save 10% On All Wine Gifts! Last updated by Hello Subscription on December 7, 2018. Holiday Subscription Box Deals & Doorbusters / Subscription Box Coupons & Deals / Plonk Wine Club Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification This holiday season, Plonk Wine Club is offering 10% off all wine club gifts! Use coupon code HOLIDAY18 to get the deal. Ends 1/1/19. Are you getting Plonk Wine Club?