The IHG Rewards Club once again is offering a nice promotion, which allows you to earn double points. You can register here:
You can register until December 15, 2020, and stay in one of the 5,500+ hotels worldwide from October 1st until then. Bookings that you’ve already made will also count. It is merely important that you register before your stay.
The only restrictions that we know of are that the stay has to take place between October 1st and December 15th and that you need to register before your stay. You also have to book a Qualifying Rate, i.e. one that will earn you points. Bookings made via third-party websites will not give you any points. You have to book directly on IHG.com!
Source: frequentflyer bonuses – thanks!