Prepare to fall in love--Ireland is truly magical! The weather really is hit or miss. I've gone in May and needed heavy sweaters, down coat, and thermal underwear, and another time in January it was cool but sunny, relatively dry, and not as cold. If you plan to get off the beaten path at all, you'll want some hiking boots that will take mud and water. My favorites--Dingle Peninsula (Rick's driving tour is great), the Dublin walking tours given by Trinity students (see Rick's, of course), Beara Peninsula, mass famine grave at Skibbereen (if that can be a "favorite" thing), Aran Islands (Dun Aengus--wow!--better than the Cliffs of Mohr, I thought), Muckross Abbey and Muckross House near Killarney--and of course, the people. Don't be shy about going into a local pub for a music session--some of my best memories! Enjoy.