In the daytime it is important NOT to leave any valuables in your car, i.e. your passport, jewelry, phone etc in your car or trunk. I've heard of car's being emptied out from places like Loterie Farm to Mullet Bay.
My advice is to 1) never leave anything in the car (visible money, phones, portable speakers, passports 2) if you must leave something in the car, try to do so discreetly and not visible to any potential thieves 3) be careful of what you leave on the beach as well, as even my local friends have had their stuff ransacked while out for a swim
Some people are just very desperate, unfortunately, but the best way to avoid any of this is to be smart and a few steps ahead
