Even though I'm not Irish I love the Irish traditions. On a whim, my sister started my niece in an Irish dance club, 13 years ago. It stuck. She placed 6th in the world championships in Ireland and we started a tradition of watching her dance. The week of St. Patrick's Day starts out with her dancing in nursing homes and other venues. On St. Patrick's Day, she usually dances in the Denver parade and then Dances in an Irish pub for 9 more hours. She's one tired puppy at the end of the day.
I don't drink beer often, but I enjoy a nice cold one on St. Patrick's Day.
Another tradition, when I lived in Chicago, was to see the Chicago river dyed green, the neighborhood festivals, corn beef and cabbage and the Chicago parade. Chicago has many ethnicities; but on St. Patrick's Day everyone is Irish!