We're going that week also, and like the above poster, I've had no problems whatsoever making PS's for exactly the times we wanted. I even accidentally got CRT, and I didn't want it.
I called and asked for the Princess Breakfast in Epcot for as close to 9:00 as possible. He answered back that he had a 9:00 seating, so I took it, gave all of our info, and when he repeated everything back, he said, "Okay, that's Cinderella's Round Table for Breakfast on . . . . . " I said, "Whoa, I asked for the Princess Breakfast in Epcot." He said, "Uh, oh," checked on the Princess Breakfast, and it was still available for 8:50 and then booked that one. He laughed and said, "You actually got the hard one." Can't tell you how many times we've tried for that one with no longer, and ironically, my DD really wants to do the Princess one on this trip.
On the crowd note though, NW Fla schools (that's us) are on Fall Break that week - not sure about the rest of FL - but I know there's a bunch of us from our area that are planning on going that week.