Who knows how to rent a car from Dubrovnik to Zagreb, the middle of a short to cross Montenegro, do you have to give the car rental company border fee? In addition, can Croatian highway tolls use euros ?

If you cross Bosnia and Herzegovina this way, you don't have to pay a transit fee or go through any procedures. You can just walk across.

Passengers need to check the rental agreement when crossing the border, so it is essential to provide one.