I'm planning 15 - 25 August and I called yesterday and got everything I wanted for the times I wanted. It's still pretty open, but don't wait too long.
My time line in my signature is incorrect, we changed dates for the free dining plan.
We arrive on August 19th, and I just made all of my ressies(just hung up actually!). I was able to get everything I wanted at the times I requested, so it seems pretty open right now.
I made my ressiesabout a week ago 4 my trip in Oct. I got everything I wanted with the exception of Le Celier.....i Had to make a later ADR than I would have preferred. (7:45pm.....I'll starve 2 death and miss illuminations!)