I haven't played in Ireland yet, but took my boys to Scotland in May to play the Old Course among others. In August I visited Ireland with my wife - her first trip abroad - so I didn't think I should play while I was there despite her encouragement. The weather in last August was gorgeous (not so much Scotland in May but we expected that and were prepared). We did visit several courses including Waterville and Old Head. Loved Waterville. Old Head was unique in its setting, but the course itself looked more like resort courses in the U.S. except for the stunning vistas. I will definitely plan to go back and play golf in Ireland, as well as go back to Scotland. The history, the style of golf required and the culture are all things that draw me to the UK for golf. Would be interested in people's favorite courses that tourists / golfers can play for planning purposes.