Upvote:1
See How can I determine if I need an International Driving Permit? - it's generally only required when the script is different to yours.
Source: NZ citizen, and have used a NZ license without an IDP in the USA to rent and drive cars on several occasions, and have even been checked by police.
Upvote:2
The expiration date that counts is your normal driving license. The IDP is nothing but a standardized translation of your license. As long as your Italian license is still valid, you are OK.