If you register on this page with your free Best Western Rewards account, you'll automatically receive a free night voucher after staying just two nights at any Best Western property in the United States, Canada, or the Caribbean between February 18 and April 20. Those two nights can be from a single stay, or two separate, one-night stays, so this should be a pretty easy reward to earn.
Remember to book your paid nights with a travel rewards card like the Chase Sapphire Reserve or Platinum Card by American Express to earn bonus transferrable points on your stay, as well as extra benefits like free travel insurance.
You'll receive your voucher 2-3 weeks after staying your second night, and it'll be good for 70 days after it's issued.
Stay Two Nights, Get a Free Night | Best Western Rewards