I was told by my guide that once all the paper work is done, "completed and recieved status", you will be able to book your "free" stays. You don't have to wait till March 6th, or closing.
Black out dates have been posted as Feb 14-18, 2002; March 28-April 1, 2002; Dec 25-31, 2002; Feb 13-17, 2003; and April 17-21, 2003, and no one has hinted these are incorrect. All stays must be completed by the end of June 2003. My guide also said that there is no "artificial" limit to these stays.
You can book any resort listed on a "first come, first served" basis, which is only limited by the actual number of standard view/type rooms available. There is no artificial limit like some of the discounted rates (AP, DC, or code). The free stays may be booked as little as one week in advance or up to 7 months in advance. Rooms may not be upgraded at time of booking, or at check in.