Of course St. Patrick himself was probably a hardcore ascetic. Early Irish Catholicism was marked by such extremes of ascetic practice that it nearly caused a schism within the Catholic church.
Examples of religious devotion included stripping naked, wading into a river and standing with arms outstretched in a curciform for hours.
So he would not probably be very happy with the idea of HIS feat day being a drunk up.
But I'm not catholic so I don't care.
30 minutes until beer!