While looking at my recent activity I noticed a section for "Bonus Nights". What is this and is it easy to get them? I am going to be about 1 or 2 nights short of making Platinum by Jan 1, even including all my future reservations and have no other chances to get those last 2 nights. I did stay in a Marriotts for over 225 nights last year, but not sure if that would help me out at all.

Any help in getting to keep my Platinum status is greatly appreciated