Could you source an update (perhaps from the team in Barcelona) of the date on which the AC Hoteles "joint venture" sites will become full members of the various MR schemes: e.g. "nights stayed", "points earned", and benefits available.
The last word (May, I think) put the "likely" date as "late 2011". This is helpful as an indicator, but a more precise prediction would enable many (myself included) to "firm up" on potential travel plans for the end of 2011 and early 2012.
That is exactly the situation. Marriott is currently committed to bringing Marriott Rewards "on line" in the AC Hotels in "late 2011".
The point of my point was ask for a more precise statement of this timing.
You will have seen Marriott Insiders' response.