Thought of another question.  We will be arriving in Dublin around 6:30 am on sunday morning, we are booked into the Regency Hotel in Dublin for Sunday nite.  We are planning on maybe going to St. Patricks for the 11:30 Mass and then taking one of the hop on hop off bus tours around Dublin.  We will have a rental car and wonder if we could park it in the hotel parking facilites and take a bus to downtown, as we will not be able to check in till later in the day.  Or are there public parking lots/garages in the area of St. Patricks where it would be ok to park a retal car with three suitcases in it?  I suppose I should email the hotel, but this group is much more fun!