Originally Posted by essxjay
True on the Montenegro count, and nearly correct on Kosovo count. The Euro is one of two official currencies of the protectorate: the Serbian dinar is also legal tender there. OTOH, the dinar is the only official tender in Serbia, but the Euro is used and accepted (probably because of its loose commonwealth with Montenegro).
Thanks for this additions. I wasn't aware of all this details.
The EU at a glance - Travelling in Europe - Money:
There are different thresholds of participation in the EU. EU membership does not entail immediate conversion -- or conversion at all -- to the Euro.
Just to make matters crystal clear, a country can be Schengen but not necessarily an EU member.
Absolutely! Schengen, EU and Euro Zone are still not the same and won't be for quite a long time if ever.