I got invited to this one also - just this week when I logged in. Registered w/ no problem

I'm kind of new to Marriott - quick question about promotions and "double dipping"

So I have a stay coming up on Monday (8/22) that will be my 4th stay and get me my 2nd (and last) free cat4 night for the "Marriott Rewards Bonus" which ends 8/31.

The new promo starts 8/15 - will the 8/22 night count towards both promotions? Or will they only apply it to one?

Just wondering how this has worked for others in the past...thanks