Just wanted to share my experience with the discount. We were originally booked with a split stay - 8/13-8/15 at AoA and 8/15-8/20 at the Poly. When the Visa discount was announced last week, I called (twice) to change our first two nights to the Poly (and explained to the CMs about our split stay and that this would give us a full week at one resort). They said there was no availability for a club level room with the discount for those two nights. So, when the discount became available online this morning, I tried for myself. There was no availability for the two nights (8/13-8/15), but when I put in our whole week (8/13-8/20) it DID give me the discount on the first two nights
So, I guess my point is, if you're having any issues getting this discount to apply, keep trying different things. I'm guessing there must be a length of stay requirement, but for some reason the CMs I spoke with didn't know this
Best of luck to everyone getting their discounts!