Be persistent. The pixie dust was flying for me earlier today. I have been calling to get a dinner reservation at Ohanas for 10/22 for about a month now. (DH decided he wanted to go there months after I had made all our other ADRs.) Anyway, we were a party of 4 and today the CM volunteered that she had seats for tables of 6 available at earlier times. I took an early seat for 6 and my mom and stepdad will be joining us for dinner at Ohana instead of Capt. Jack's. Anyway, just wanted to give you hope that you may still be able to get what you want through Disney Dining. Also, since you are looking for 10/27, you are coming up on 45 days (the cut off for when travel packages have to be paid off). I bet a few reservations may cancel once you get to the 45 day mark.