um...what exactly are you looking for? Do you have a really large group or really specific times & places you must book? Because there is a LOT of availability with quite a variety to choose from. I just booked the weekend prior to your dates & was amazed how much availability there was -- every place I wanted was available within 30 minutes of my selected time (4 of 6 were available for exact time I put in.)
I just searched on 9/24 for "dinner" for a party of 4 with no specified time or place & 57 restaurants showed up with availability with times ranging from 3:30 to 8:30...in parks, out of parks, Dining plan restaurants and not. Some were character meals including CRT, CP, Garden Grill and Akershus. Same on 9/26. And I looked at breakfast, too - 19 places were available on 9/26.
If you mean no Chef Mickey's and no Le Cellier...yeah, a few places like those are booked solid. But a little flexibility on choices/times and you'll find there's plenty. If you don't get exactly what you want, book something you'll settle for and then keep checking the on-line system between now & then. Your first choice may become available. People tinker with their plans constantly, and others cancel their vacations...you could luck out.
But there is plenty of availability.