One example - Germany has a reputation as being a rule oriented/structured country, so taking an extra few days of preparation prior to deployments, was very much appreciated there, and we went to the extra effort to do so (and totally enjoyed having an appreciative audience for our wonderfully laid out test plans).
We also discovered in Brazil, that if the customer showed up 5 or 6 minutes late for a conf call, that we shouldn't stress or be concerned that there was a problem - but that culturally, meetings/calls don't always start exactly on the minute. We also learned to be careful to leave an extra 30 minute window for meetings to end a little later than they were scheduled.
Contrawise, We were always careful to dial in within a 30-45 second window at the start of a call when working with the UK. And those meetings (almost) always ended precisely on time.
These are things that you need to be aware of if you want to work effectively in different countries. Don't always expect that other people's expectations of what's appropriate are the same as yours.