If I have an Irish concert to go to I will. There's no tiny bit Irish in me, so no, otherwise, besides the habit of green from growing up because you'd pretty much get assaulted if you weren't wearing green in school growing up.
This year I'll probably listen to the newest Carbon Leaf album while driving to see my horse. It's pretty Celtic sounding.
I also tend to take advantage of the options in the supermarket - we have a big corned beef in the freezer now.