Regarding AP holders with both onsite and offsite/day visit plans: I got a call back from my email that I sent on Friday! I had asked if we'll be able to make park reservations for the resort stay AND the 3 random days without a resort stay.
She said that they had had a meeting about this exact thing and that I should be able to make non-resort AP reservations on Friday in addition for my resort-stay reservations that I made today (I was one of the lucky ones that didn't have a problem getting more than 3 days on my reservation)
She said they're being treated as different "buckets" and that I should have a spot in each bucket separately. Fingers crossed that she's correct. I guess I'll know on the 26th!