ARRGH! I'm going to have to wait until I can hash through the numbers with my TA. Which probably won't be until next week. I don't think I can book using my Rewards ard, and then pay with another credit card, right? Because that's how I would have to do it--that, or wait until the dates open up for the general public.
On the good side, though, I originally planned to pay for the whole trip. Then MIL said she'd pay for hotel/tickets/dining plan. So, even if I'm "forced" to upgrade and get, say, concierge, in order to get a discount, it's going to cost me little or nothing. MIL does have a limit on what she'll pay, but it's a high one--enough to cover a week a the Poly with park hoppers and the regular
DDP.