You can usually use as few as 5,000 IHG One Rewards points to book a reservation for a stay using a combination of cash and points; and for a limited time, you can also save 15 percent on Points & Cash reservations on the cash portion at participating hotel and resort properties through Monday, August 10, 2026… Save 15 Percent on Points & Cash Reservations With IHG One Rewards Photograph ©2023 by Brian Cohen. …but you must book your reservations by Monday, July 27, 2026.