Driving the coast from Istria to Dubrovnik
A road trip down the Croatian coast often starts in Istria, coming in from Trieste or Slovenia, and ends in Dubrovnik, with a detour inland to Plitvice on the way. If the first days are in Italy or Slovenia, the Europe pack covers Italy, Slovenia and Croatia in one eSIM; the Croatia pack only starts working once you are in Croatia.
Over two weeks of driving, with navigation running every day and bookings made as you go, 10 GB for 30 days is the usual size. A week between Split and Dubrovnik fits in 5 GB. South of Split, watch the old coast road through Neum: that short strip is Bosnia and Herzegovina, outside both the Croatia pack and the Europe pack, and the Pelješac Bridge, open since 2022, takes you round it without leaving Croatia.