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!