You cannot get any discounts on WOC dessert party. The best bet is to buy Disney gift cards at target with your red card and get 5% off and you have to call in to pay. They dont even offer AP discounts on this either as I've asked about it.
Thank you for the response. I was specifically asking about the dinner/viewing package at Wine Country Trattoria, not the dessert party (which I know offers no discounts.)
But also, great tip about buying the GCs at Target with the Red card. I don't have a Red card, but I'll have to look into that. I'll take any help I can get