From the Radisson Rewards website
“Let your travel take you farther in 2019 — Earn up to 120,000 bonus points on all eligible nights including Free Award Night redemption stays. Book now and stay by March 31, 2019 to earn more bonus points to redeem for future stays, gift cards, prepaid cards, airline miles and more.
Stay 1 night, earn 1,000 bonus points
Stay 2 nights, earn 3,000 bonus points
Stay 5 nights, earn 10,000 bonus points
Stay 10 nights, earn 50,000 bonus points
Stay 20 nights, earn 120,000 bonus points
The more nights you stay, the more bonus points you’ll earn, so book soon. This offer is available at all Radisson Collection, Radisson Blu®, Radisson®, Radisson RED, Park Plaza®, Park Inn® by Radisson and Country Inn & Suites® by Radisson hotels worldwide.”
You can register here: Radisson Rewards Link