Hi, Julie!
What a treat to be able to extend your stay so you may experience the opening of the
2017 Epcot International Food & Wine Festival. You've also made an excellent choice in selecting Disney's BoardWalk Resort for your "tasty" extra days - it's the perfect location! Nothing beats being able to walk back to your resort with champagne in hand. As a self-proclaimed Disney foodie, it's my favorite special event of the yEAR. You can also select the highlighted link above to read all about what's new for this year's festival.
Any snack entitlements you may have left from the Disney Dining Plan that is a part of your Caribbean Beach Resort stay, will expire at midnight on August 30th and will unfortunately not carry over to your BoardWalk reservation.
If you happen to have a debit or credit card issued from a retailer that offers discounts on the purchases of gift cards, you could buy Disney Gift Cards at the discounted rate to help budget for your trip around the world!
I hope this information helps, Julie! Please let me know if any additional questions should come up, I am here to help!
Bon Appetite!
Faith