mchughs in kilbarrack and clontarf and redmonds in ranelagh are two of the better off-licences around, there's also a very good one in the back of the centra on westland row (not certain they stock those exact beers but they do have a good selection) the spar on merrion row may also have them.
my OH loves trying different beers & likes McCabes in Blackrock as they have a good selection - they definitely stock Duval & Westmalle . For drinking in Dublin, the Porterhouse has a selection of trappist beers - the Rochefort 10 with its high alcohol content means it'll be an early night for him if he has a couple of those!!
Leffe beer is available here through Dunnes or a good off licence, speaking of which teh Vineyard is no longer in Galway (or it has moved and I don't know where it went to!!!)
Leffe beer is available here through Dunnes or a good off licence, speaking of which teh Vineyard is no longer in Galway (or it has moved and I don't know where it went to!!!)