While doing some more searching here, one suggestion was to check Wine Spectator magazine. Citricos and the Yachtsman were both listed for $20, but Narcoossee's wasn't listed online.
The stuff I'd plan on bringing would probably cost $150/bottle at a restaurant, so I'll bring my own for sure. The big inconvenience though is getting it there as I had intended to leave straight from the park to dinner and now we'll have to run back to AKV to our room and then out. Of course, after being at the parks since 9am, it may just be a good idea to head back to the room to freshen up a bit anyway before going out for our signature dining meals.