Make a copy (or two) of your confirmation including the vouchers.
Make a list of important things to bring, like your passport, all your travel vouchers and tickets, any supplement or medicine you need while traveling.
Check the weather & travel light! Leave some space in your suitcase for items you will purchase during your trip, and/or for your yoga/exercise travel mat.
Leave your vouchers and/or Italy cell phone number with relatives or other people who might want to get in touch with you while traveling.
Drink a lot of water, before, during and after the trip. Traveling can be demanding; stay healthy!