I know it's an unpopular opinion, but given that WDW is an international destination, I'd never WANT them to do all so-called "traditional" Thanksgiving (if it was true traditional it would be more like seal, venison, nuts, berries, root vegetables, and corn - not turkey and dressing). Offer a plate if they must. Or if you really must 100% have turkey and dressing and such plan on Liberty Tree Tavern.