We have done this many times, both snacking around the world and beer around the world and wine around the world.
Mexico, we share a nachos.
China, we share egg rolls. I know not very imaginative but it is what it is.
Norway, I get skool bread my son hates coconut so he just gets a cookie or something.
Germany - we share a pretzel
Italy - I don't think we have ever gotten anything quick there but we love the wine bar and usually share a cheese plate there.
Morocco - we either go to Spice Roads and get a couple of small plates or grab a combo plate in Tangerine Cafe and share it.
Japan - we share edamame
France - ice cream baby
GB - we share fish and chips
Every country has beer so that is easy and we share that.
There used to be wine flights in France, Italy and Germany but now all they have is the wine walk which sucks because you only get two pours in each country and don't get to choose your flight so I'm not sure what we will do. There is still wine shops in each country and you can still buy a glass of wine just not flights. You can get a wine flight at the wine bar in Italy. There is wine by the glass in Japan as well although we have done sake flights there, not sure if you can still do that or not, we didn't ask when we were there in December.