Coffee, lattes, and cappuccinos are big in Italy. Cappuccinos, especially, are important, because they originated in Italy.
In Italy, you will not be able to order a cappuccino after 10am. Tying to order one is considered a faux pas and will probably mark you as a tourist. Starbucks is planning to open their very first shop in Italy. There is no word whether you will able to get a cappuccino from them after 10am. If you want to avoid side stares from locals, avoid this faux pas.