O yes. It's the bars and shops who increase prices. And they used the € as excuse for it.
I regularly have to deal with international money exchange.
You still have to pay for it. € or not. Some banks even dare to ask more. Becouse they have to make up for the conversion exchange that they lost is their explination.
Companies do get to choose what currency they want to use.
(even you could/can do that) In the past that was very common. In east-europe fi the most prefered German marks.
Now their options are more limitted ofcourse.
Today in the news:
The economic grow of countries not yet using the € is 4 times as big as the grow in the eurozone.
(I don't care at all about the european union in general.
They can't agree on nothing and are constantly devided.
Coutries form little clubs inside the EU and so on...
It's everything but a union.)