Great trip report...
We were there just before you 15-19 Sept (on the DVC side) and the security dude was a little salty with DH--demanding to see his ID. DH was fumbling around for it and then the security dude corrected himself and asked to see his room key. DH was a little surprised by the interaction. Later, DH asked me why they were doing that- I told him I didn't know, so I came up with my top 3 best theories

(does anyone know? )
After the first interaction we always had a room key at the ready.
On another occasion, the security dude was standing in the automatic door (air conditioning the outdoors... Actually--just making the elevator lobby hot and muggy

)