Last year, I posted an article written by Danny O'Boyle titled "Why I hate St Patrick's Day:"
Face it folks, Jews don’t have a holiday on which they wear plastic big noses and stuff their pockets with play money and African-Americans don’t sponsor a tap dancing and watermelon festival. So why do the Irish take their worst stereotypes, set them to music, and dance to them? I don’t know what Irish-Americans think they are doing on St. Patrick’s Day, but it has nothing to do with Ireland.
If you have a minute, I strongly suggest reading Danny's article. It may actually get you to think twice about what you are planning on doing.