Amex Offer – Spend $150 or more, get $50 back Airbnb YMMV

check your Amex offers, I saw this on 2/3 of my Amex blue cards.
DETAILS
Get a one-time $50 statement credit by using your enrolled Card to make a single purchase of $150 or more on bookings online at airbnb.com from 6/15/2017 to 9/8/2017. See terms for exclusions.
OFFER TERMS
Enrollment limited. Must book directly with Airbnb online or via mobile app. Offer only valid for domestic and international Airbnb bookings paid using your enrolled American Express® Card after enrollment and prior to 9/8/2017. Excludes Airbnb Meetups and gift card purchases. Offer not valid for bookings that are paid for before the promotion start date or after the promotion end date. Offer is non-transferable. Must add offer to Card and use same Card to redeem. Limit 1 statement credit(s) per American Express online account. Statement credit will appear on your billing statement within 90 days after 9/8/2017, provided that American Express receives information from the merchant about your qualifying purchase. Statement credit may be reversed if qualifying purchase is cancelled. If American Express does not receive information that identifies your transaction as qualifying for the offer, you will not receive the statement credit. For example, your transaction will not qualify if it is not made directly with the merchant. In addition, in most cases, you may not receive the statement credit if your transaction is made with an electronic wallet or through a third party or if the merchant uses a mobile or wireless card reader to process it. By adding an offer to a Card, you agree that American Express may send you communications about the offer.