3. Don’t Say “Ciao” To Everyone
If there’s one cute Italian word everyone seems to know, it’s ciao. You hear it in the movies and assume it’s the ultimate greeting or parting word that will make you seem like a native Italiano. However, it’s not as commonly used as a friendly “hi” or “bye” is in English. Ciao is generally reserved for close friends, family and little children, and you’ll sound like a goof if you blurt that out all the time. Italians are rather formal in their greetings. When entering or leaving a shop or restaurant, for example, a buon giorno or buona sera will seem more appropriate and respectable. Think of ciao as more like a “hey” or “yo” and use it sparingly.

4. Don’t Expect Tap Water at a Restaurant
Rome is full of public drinking fountains. Every few blocks, you’ll stumble upon a fontanelle spigot (sometimes quite elaborate and sculptural) where you can wet your whistle or fill your water bottle. This is the civilization that engineered mighty aqueducts, and their water is safe, clean and fresh – albeit a little high in calcium and chlorine. By all means, drink it and brush your teeth without fear of Ceasar’s revenge. However, tap water is rarely served in restaurants. Most locals and visitors buy inexpensive bottles of water when dining out, either acqua naturale (still) or acqua frizzante (sparkling), depending on if you want bubbles or not. While the tap water is perfectly potable, its just not the norm at restaurants and one of those things not to do when in Rome. You can insist on a glass of tap water, if you really want it, but your waiter may be a little put off by the request.
