We too are doing Italy next year. We've been to Europe a few times and a few packing hints.. .. .
1) You can't pack too light. Because you are going from place to place, might I recommend one suitcase per person
2) Be sure you have luggage with wheels
3) MAKE SURE YOU WEAR A MONEYBELT!!! This protects your passport, money, credit cards etc. You will feel ease in crowds, and won't have to worry about pickpockets (We never experienced any problems, and enjoyed every trip)
Enjoy your trip. You'll have a blast!!!
