It's my understanding that Marriott no longer has the all-inclusive option. I think it was discontinued this past October with no explanation. For years they did not offer this and it seemed to be popular (maybe too popular?) but didn't last long. Too bad, my wife and I were planning to try it as an add-on to a hotel stay. Hope this helps to answe your question.
They still have all inclusive, I just don't think you can book one with points.
I believe this is an old URL, that should be taken down. Marriott has stated to me that the "all-inclusive" option was discontinued in the fall of 2011. if you want a true all inclusive (hotel nights,meals, taxes and gratuities), go to Hilton, or something else. Marriott does not have it.