Border travel into Croatia, Bosnia and Herzegovina, Serbia, Kosovo or Albania needs separate supplier approval, insurance and passenger entry checks. Summer border delays can affect the return day. Do not select an international shortcut simply because navigation shows fewer kilometres.
Follow the signed limits, use seat belts and an appropriate child restraint, and avoid alcohol when driving. Check recognition of your original licence and any international permit with the relevant authority and the actual supplier. The company may set stricter age and licence-duration conditions than the legal minimum.
For a relaxed journey, choose fewer overnight bases and leave room for weather and unplanned stops. Store the accommodation’s permitted vehicle approach and parking instructions alongside the address; the shortest navigation route may not be the right way to arrive.