Update: Some offers mentioned below are no longer available. View the current offers here.Now through tomorrow, Thursday, December 24, you can purchase Hyatt gift cards at a 10% discount when you enter the promo code GPGIFT15 at checkout.The promo code works on physical gift cards, e-gift cards and check certificates. Check certificates, if you’re unaware, are generally accepted at more locations that Hyatt gift cards, but may be more of a hassle to redeem.Limitations:Purchase by Thursday, December 24.Must use offer code GPGIFT15 at time of purchase.Limited to $2,000 per purchase.Limited to $10,000 per member per day.“Must be a Hyatt Gold Passport member in good standing at time of purchase.” However, no log-in is required.Confirm that the discount has been applied before completing your purchase!Steps to PurchaseGo to Hyatt’s Gift Card pageChoose either a physical Hyatt gift card (free first class shipping up to $25 for overnight delivery), Hyatt E-Gift Card or Hyatt Check CertificatesSelect a card design and valueEnter recipient’s information and personal messageAdd to cartAdd promo code GPGIFT15 in the “Using a promotional code?” box and applyUse the TPG Chrome Extension to find the best card to use to complete your purchaseAmerican Express OPEN DiscountUse an Amex business card to make this deal even better!FlyerTalk users are confirming that this 10% discount is stackable with the American Express OPEN 5% discount! Simply use an American Express business credit card to receive either a 5% discount credited to your statement or 2x additional Amex Membership Rewards points.Per Hyatt’s landing page, this discount applies “up to $10,000 per Card account in a calendar year. This benefit can be combined with other promotions offered by Hyatt.“So, check your wallet for:Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.The Business Platinum Card from American ExpressThe Business Gold Rewards Card from American ExpressStarwood Preferred Guest Business Credit Card from American ExpressBusiness Green Rewards Card from American ExpressThe Plum Card from American ExpressGold Delta SkyMiles Business Credit Card from American ExpressHere are the full terms and conditions of the Hyatt Amex OPEN Savings Benefit, and here they are for the 10% discount.Bottom LineThis is a great offer if you’re planning on spending nights in a Hyatt hotel coming up, particularly if you have an American Express business card! Even if you’re not planning a trip soon, you don’t have to worry about these gift cards expiring, as there’s no expiration date on Hyatt gift cards.H/T: FlyerTalk