I haven't had any trouble getting ADRs for our trip 9/7 to 9/13.
Of course, I got CRT and PSB at the 180 day mark. I called about two weeks ago for Biergarten and Ohana and I called today for Rose and Crown to watch IllumiNations.
For all of them but CRT, I pretty much picked my time and I got within 5 minutes of the time I requested.
We decided not to even try Le Cellier because of the difficulty getting in there usually and I know that most of our ADRs are not the most popular restaurants, but when they are exactly what you want, you get a little happy.