I'm not getting the same results, but at this point I'm happy to chalk it up to some mistake I'm not seeing in my spreadsheets.
For Boardwalk Inn, I'm getting 45% off dining, plus a per-night amount of about $53+tax.
For Animal Kingdom Lodge, I'm getting 45% off dining, plus a FLAT amount (not per night) of $48+tax, and no per-night discount.
I had a thought about the 55% for the first guest vs. 45% for additional - how are you sure that's an extra 10% off dining for the first guest and not an equivalent extra amount off the room? Both would be per-night, and the first guest has to be an adult, so it amounts to an extra $6.18 or so per night. I can't think of a way to distinguish between an extra discount on dining for the first guest vs exactly that amount off the room. Or am I missing a clever way to make that distinction?
My eyes are glazing over. We're very close. I'm calling it a night, and I'll figure out what I did wrong tomorrow.