Expiration. To prevent your OneKeyCash rewards from expiring, all you have to do is earn or redeem points at least once every 18 months.
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Bottom line. The new One Key program offers rewards for eligible bookings with Expedia, Hotels.com and Vrbo. Most types of bookings earn a decent 2% return and the rewards are easy to redeem. Just be sure to price shop so you know you're getting the best deal outside of any rewards you'll earn.