[QUOTE=harryheck]I will have nine nights when the promo ends. I was offered 10 nights- 20,000 points. I only use my points to exchange for miles in NW or AMW. I could check into a local Marriott for 1 night (not stay- bad hotel) and, thereby, get the 20,000 points.

That's not quite correct. You will get the 20K points PLUS the points from the extra night you spend. So closer to 21K.