It really seems to me that the availibilty is so limited they are really just releasing it to appease the forum members and travel agents. There is no way someone from the unknowing general public would be able to get their hands on a decent room with this FD release.
In 2010, 2011, 2012, 2013, and 2014 they released FD in the spring and I would book the room I wanted for December in July or August. Never had any trouble getting what I wanted and used to laugh at all the fanatics staying up all night to get a room that I could book 2 months later.
This year all of the "popular" room choices were gone by 10am!! LOL
To awnser the question, we got the standard room at CSR for Dec. 10th-20th that we wanted. I booked it online at about 7:15 am CST, which is 9:15 am EST.