Italian Brides / Saint Pat's

We're having dinner on St. Pat's day at my future in-laws who are Italian. I've love to wish them a Hapy Saint Patrick's Day in Italin but I have no idea how to say it. Are there any Italian brides out there who know? TIA

Thank you so much for your quick response. I'm taking Italian now and can't wait to impress them tomorrow

I'm sure they'll appreciate it