I was only in Europe for 2.5 weeks and you'd be amazed how quickly you get used to metric measurements. It's really not difficult at all.

Though I found it odd that coke bottles were 33cl. 33 would seem to imply that their goal was 1/3, what's the impetus behind that? If you're using the metric system, why 1/3? Isn't the metric system based on 10's? It would seem to my mind that the obvious size for that bottle of coke would be 30cl or even 35cl, no? What am I missing?