Wow, I find this thread amazing.
We were there from 10/3 thru 10/10, and sometimes even did the parks that were recommended to avoid per UG.
The longest wait we had was when we decided to ride TSM during the last 10 minutes of park closing at evening EMH. Wait time was posted as 50 minutes. In reality, it was actually 35 minutes.
Here is a brief synapses of what we experienced Sunday night:
Arrive at MK 7:45pm, catch last train to Frontier Land before Spectro Magic parade.
Splash Mountain was walk on! We rode BTMRR twice, then walked through the crowd gathered for the parade, to Haunted Mansion, all before Wishes at 9pm.
Rode POC and Magic Carpets with minimal waits, and had a snack/rest before park closing at 10pm.
We then approached our longest line during evening EMH, Buzz Lightyear, which had a posted 15 minute wait, but was really less than 10.
Did Monsters, Inc. (10 minutes) and TTA was walk on.
Another rest break, and then back to Splash Mountain and BTMRR (no waits whatsoever), before literally skipping down Main Street at midnight to catch our shuttle back to Beach Club.
Until Thursday evening (Fantasmic), crowds were non existent for us at least.
Just for the record tho, Disney Hollywood Studios and early morning EMH was packed on Saturday. When my son and I left the park at 11am, it was a 100 minute wait for TSM, and 50 minutes for Tower of Terror, which never exceeded 15 minutes the week we were there.