Mine is at 5 days - part of a small block of rooms, but we all paid our own bills, and my B*nv*y number is on my folio. I have no doubt my (more expensive) Marriott stay I am on now will post first, and then I will lose out on more promo points, and I will have to deal w/byzantine Marriott CS to try and retroactively have the first one post sooner and promo points recalculated, etc.
Reason #47 why the grass can be greener...