I got Chef Mickey 180 days out (when you could still do that up to June 19th)
On my 90 day I called at 7 am, I got ADRs (all after May 26th) for:
Tusker House Breakfast
H&V (Playhouse Breakfast)
Sci Fi (latest lunch possible)
Boma dinner
Crystal Palace dinner
These were all the EXACT dates and times that I wanted (within 15 minutes)...
The entire call took 33 minutes (and she lost my ressies at first and had to redo them, still took 33 minutes)...my 90 day was a Saturday though
We are not buying parkhoppers, so it was important to get the exact days, and I did
Now, I think CM, CRT, Fantasmic and LeCell will be hard, but you can be flexible with those (time/date...plan those later in your trip)
I also called last week (about 2 weeks into my 90 day window) and got Ohanas for dinner...it was a little early at 5pm, but will work for my family as we have a brunch and no lunch scheduled that day...