I've not been there, but apparently the following directions will get you to an area with some good rock climbing and reasonable bouldering:
Approach: Climbers usually base themselves at Ailladie and this can be approached from the south via Lisdoonvarna or on the northern side from Ballyvaughan. This latter is the normal route from Dublin. Take the Dublin - Galway road to Craughwell, turn left to Ardrahan and continue to Kinvara and Ballyvaughan. Follow the coast to Black Head. About 12km south of Black Head the road rises as it leaves the townland of Fanore and swings around the next headland where the Cliffs of Moher come into view in the distance. At this point there are some lay-bys bounded by 5m high cliffs on the left and cars may be parked here. The edge of the sea-cliff is just 100m from the road at this point. There is a hostel and a large camp/caravan site in Fanore, plus a shop, pub and public telephone. Ballyvaughan to the north is a pleasant little village with good pubs, a hotel and an excellent grocery. Lisdoonvarna is a faded Fifties kind of place with lots of accommodation including a hostel. The fabled village of Doolin now has three hostels.
(taken from here: http://www.climbing.ie/crags.html)
Besides that, drink Guinness. Lots of it! And have some REAL soada bread, not taht sweet stuff we call soda bread in the states!
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