If in doubt over precedence at a junction give way to traffic coming from the right. Seat belts are compulsory and you must carry a reflective warning triangle to be placed at least 50 m behind your car when broken down. Contrary to received opinion, the standard of driving in the Marche is generally good and, avoiding city centres, you shouldn't return home prematurely aged. Away from the big cities, your car is unlikely to be stolen, particularly if it is right-hand drive. Car radios, however, are an easy target - if you can't take them with you, make sure windows are closed and doors locked.
Towns also close down on the feast day of their local saint.
The weeks on either side of August 15th are the peak summer holiday periods for Italians when it's busy on the beaches. Formal clothes are unnecessary unless you stay in the grand hotels. A smarter outfit, however, for the evening stroll and dinner will help you feel less like a tourist. Many visitors who would never dream of visiting their own churches back home in shorts and halter top get huffy when frowned upon for doing it in Italy - respect religious sensibilities and cover up bare flesh when visiting sacred places. Shorts, anyway, unless you are young and boast a fine pair of legs, belong nowhere other than on the beach.