Actually, I will be there on the same date as you. This will be the first time we've done Disneyland at Halloween!! We've got the tickets to the "Mickey's not so scary party" and our costumes picked out. (Pirates, Peter Pan, Tiger Lilly, Mermaid, more pirates and tinkerbell.)
We went prior to my youngest daughters birthday. Sept. 26 was the date we chose and her birthday was the 28th...she was turning 4. We stayed until the end, saw the parade, the fireworks, ate a ton of candy and had an early dinner at Ralph Brennan's Jazz Kitchen. We go every year and love Disneyland! Great costumes. I was the Evil Queen from ABC's Once Upon a Time "Regina".
We will be flying to Orlando on Saturday to pay a visit to the mouse. We have been to Mickey's Not So Scary Halloween several time, and we love it. Since our numbers have dwindled this time to three, I don't know if we will do it this year. I'l run it by the 17 year old and see what he wants to do.