January Sale - Up to 15% Off at Diamond Resorts. Enjoy a fantastic 15% discount with a January Sale on Worldwide Diamond Resorts and Hotels destinations. T&C: Valid for bookings until 31st January, 2016. Valid for stays until 20th December 2016. Full non refundable payment required at the time of booking. Not valid in conjunction with any other offer. Book Now. Use promo code: JANSALE.