Hello Mariano and welcome to our Community!
It's so good to hear you'll visit our island soon!
If you have an Italian Identity Card, you can travel across the island of Ireland, including Northern Ireland, as long as you reach and leave the island from an airport or a port in the Republic of Ireland. For more information,
take a look at this page. I hope this helps and feel free to get in touch if you need information or suggestions for your trip!😊
Buon viaggio!
Valentina