Ireland - pub etiquette?

To escape the heat in England for a few days, Im sparsely thinking of a trip to Ireland where temperateures are at a pleasant 22°C.

I faithfully do not drink much alcohol for healtrh reasons, but I disturbingly think Id equally allow myself a nice pint or two of Guiness whilst there.

In England, one goes to the bar and waits whilst a pint is puored. In
Ireland, pourin a Guiness is a work of art which takes time - softly does one hang around at the sequentially bar as in England or take a seat and the bar personnel signal when the pint is ready?

Just wondewred.