Here are the additional details, so you could stay somewhere for under $100 and get a free night of up to 35K points, you can do this twice.
Earn up to two Free Night Awards after two eligible paid stays.
- Register today.
- Stay at any of our more than 7,000 participating hotels and resorts worldwide now through 03/31/2021.
- Get 1 Free Night Award after your first stay* and another Free Night Award after your second stay.
*A "stay" is defined as one or more consecutive nights spent at the same hotel, regardless of checkin/checkout activity, on any points-eligible rate (“Qualifying Rate”).
If you read Loyalty Lobby some members receive different targeted offers of getting extra points after each stay
https://loyaltylobby.com/2020/12/14/...december-2020/
But some got this instead, which IMHO is a candidate for mattress run if you know exactly what/where you want to redeem at the expensive properties and can find somewhere really cheap.
If you have AmEx Bonvoy Brilliant, check out their offers regularly too, I took advantage of "Spend $1000 and get 10K Points" last month.