Epcot, at Walt Disney World, is already wonderful. It's already exceedingly popular. The World Showcase food and beverage offerings alone will, and do, compel visitors to cancel Asian and European vacation plans. The introduction of the International Food & Wine Festival is tantamount to improving upon perfection.
On an average day at Epcot, if there is such a thing, you can get the best margarita on the planet, enjoy the best Italian meal you've ever had and top it off with the best French dessert you've ever heard of. La Cava del Tequila boasts incredible, authentic cocktails in a variety of intriguing flavors. Mere meters away, Tutto Italia makes a meal that could suitably be your last. And you need to save room for L'Artisan des Glaces subtly magnificent ice cream. During the Food & Wine Festival, and this is positive blasphemy, you could conceivably skip them all with minimal remorse.
The World Showcase will be lined with booths featuring all the usual, amazing international representatives; England, Mexico, Germany, etc., proffering a wider, yet exclusive range of their wares. A number of guest countries do also adorn the International Marketplace; Brazil, Greece, New Zealand, etc., with food and drinks you cannot get throughout the year. There are additional charges for this fare, naturally, but it's wholly worth every dime for every delicious mouthful.
Make a reservation for one or several of the seminars, multicultural brunches, pairings dinners and demos that decorate the land. Get a passport and complete the self-guided Brews Around the World tour. If you've been hesitant to try beer or beverages from places you've never been, it's time to branch out. It may surprise you to learn how much wonderful stuff is not bottled in Milwaukee.
If you're going to be there during the festival, you owe it to yourself to sign up, and, yes, pay for a few of these activities, and a bunch of the treats. There are a number of free events with your Epcot park admission, including book signings, meetups, "The Chocolate Experience: From Bean to the Bar", hosted by Ghirardelli® Chocolate Company and "Eat to the Beat" concerts in the American Adventure Pavilion. Take advantage of the free entertainment, and free time, if only to help reduce inevitable over consumption.