In Italy rules reign supreme. Some rules are meant to be upheld and some are meant to be broken. Food rules are meant to be observed, and are rarely, if ever, broken… not like the rules of the road, especially when driving in the south of Italy.
1) know when (at what time) to say NO to milk in your coffee
2) know what to drink with pizza (which you eat with fork+knife)
3) know what to drink with pasta (and especially what not to)
Bonus rule: NEVER put cheese on anything with fish in it! 😉
Buon appetito!