In my experience, it depends on which country has the strictest laws. For example, if you have a driver's license from Central Europe, it should work very easily for countries in the South, because you practice much more security abiding laws than any country in the South would ever expect from you.
If you have a licence from the South, you should be careful in Central Europe, because you might break a lot of laws, since your country either doesn't have such strict ones or, as it usually is, does never enforce them, so you are not used to follow them.
For example, running red lights is a huge deal in these countries, while in the South literally nobody cares, you could often even do it in front of a police car & nobody would give a damn.
Done several times, never had any issue
Of course you should upd inform yourself about speed limites, drinking limits or direction of traffic before 😉
