I doubt you can add it to you KTTW.
As a tip: If you do buy from an outside vendor take the details of the ticket or a copy of the back in case you loose it, as disney cannot find your ticket with the receipt from them.
We normally started in Canada and tried to see the show each country offers and have a meal in the German Biergarten.
For everyone who did drinking around the world numerous times, try it during food and wine festival:D
World Showcase closes at 9pm and so do all the f&b outlets.
It's all...
The berry cobbler at Artist point... mmmmh
I also love the black forest cake at the Sommerfest quick service in Germany. It's much better than the one they serve at the buffet.