No Mountain Dew at CERN's vending machines. But they do sell Perrier in cans the same size and shape as coke (33cl). After all, CERN is half over France too...
And in general, the most popular vending machines are coffee ones, much a more popular beverage than sodas. On the other hand, Restaurant 1 is open from 6am until 11pm for all your caffeinated needs, with freshly grinded coffee -the machine grinds in a JIT-fashion ;)-
EDIT: you can even check the menu of Restaurant 2 online (http://resto2.web.cern.ch/resto2/cgi-bin/dsr?menu). They used to have hilarious Engrish translations of the French names, such as "eat man" for "croque monsieur" -a kind of sandwich-.
And in general, the most popular vending machines are coffee ones, much a more popular beverage than sodas. On the other hand, Restaurant 1 is open from 6am until 11pm for all your caffeinated needs, with freshly grinded coffee -the machine grinds in a JIT-fashion ;)-
EDIT: you can even check the menu of Restaurant 2 online (http://resto2.web.cern.ch/resto2/cgi-bin/dsr?menu). They used to have hilarious Engrish translations of the French names, such as "eat man" for "croque monsieur" -a kind of sandwich-.