Hilton's latest promotion is a rather simple yet effective one. All Hilton members will receive 2x Bonus points on eligible stays while those paying with their Hilton Honors Credit Card will get 3x. You will need to ensure you are signed up for the promotion prior to your stay.
There is no limit on the amount of points you can earn, but your stay will need to be before 31st December 2021.
Consider too that the requirements to gain their elite status has halved for the year, it's perfectly possible to stack these together and make the most of the circumstances the industry finds itself in.