I got the 20,000 for 15 nights offer. I wonder if I'll be able to "double dip" this promo with the May 11-June 26 double night credit offer? That would certainly encourage me to find some Marriott stays in May-June. I guess it's just my luck but almost all my Marriott stays this year have occurred just outside the promo windows. I had 15 in January-February when nothing was offered and 8 more May 1-11.
I'm guessing Marriott looks at my stay pattern and figures out how to exclude me personally