We ate/drank our way around last year, had a blast. I tend to think that most of the countries are very Americanized so you really won't get a good taste of authentic food but it's fun regardless. We split just about everything (including drinks) because even though the portions are smaller, we got full fast.
Canada - has no CS but you can order the cheese soup to go from LeCellier, I learned after our trip
UK - we ordered fish and chips
France - cheese plate, pastries. They also have a crepe "cart" that I never get to taste since I can't pass up that cheese plate.
Morocco - we actually ordered sampler platters here because it's my fave CS at WDW and I couldn't pass it up!
Japan - we had plans to grab some sushi but were stuffed. They also have great Japanese packaged snacks and candy in the dept store if you want to get something like that. It's fun to check out all the imported stuff! They also have a sake bar =)
Mexico - nachos (ick.)
Germany - pretzel
Norway - pastries (I don't recommend the school bread which is a huge trend on this board, it was boring and disappointing. They have lots of other excellent treats in their display case we should have tried more of)
America - nothing, I am from America! =)
China - eggrolls
Italy - really don't have a CS or cart, but we had wine!
My best advice is to just decide what looks great at the time. I went with the idea that I would get certain things and then something else would catch my eye and I never regretted trying that instead. The only thing that I DID get was disappointing - and that was the school bread. I wish I had gone with my gut and chosen another great pastry instead (like DH did!).