I guess it depends on how many days you will be at EPCOT. I always enjoy the Garden Grille, but you will probably want to "Eat Around the World" at least once, but probably twice. If you're having lunch at Garden Grille, where are you going for dinner?
I don't drink wine so I can't say anything about that, but I do know a lot of wine drinkers get really excited about this Festival. Occasionally I try some of the beer, and that can be interesting. We don't do any of the extra cost seminars.
"Eat to the Beat" schedule while you are there:
Oct 1-3 Family Stone (hmmm, what can I say that is "kind"...)
Oct 4-7 Mickey Thomas & Starship (Always a good show)
Oct 8-11 Loverboy (Pure ENERGY Rock n'Roll-GREAT Sets!)
If I had to make one suggestion- Try everything, even stuff that doesn't sound like something you want. At least get a taste from someone in your party.
This is probably our favorite event at WDW and we count down the days every summer. Honest...