At least in years past, it has not been possible to buy wine at the F&W Festival and have Disney ship it home for you. We've wanted to do so, but have ended up carrying it home ourselves. Also, Disney won't send wine to your hotel room if you're staying on site (as they do with other things you buy in the parks). You have to carry it back to the hotel with you. (They seem to fear that an underage guest in your room will claim it and get drunk before you can get any yourself!)
I doubt this will change this year. I suppose you could take it to fed ex yourself and have it shipped home, but I'm not sure about the Florida laws on that. We haven't bothered to try that.