Disney is hands down the hardest trip I have ever planned. 3 days, 4 parks, 3 kids ranging in ages from 2 to 6. Let me help you (and save you from cussing at the "Happiest place on earth" :)
5 day driving adventure to see all of the highlights of Ireland (tip: avoid getting a manual transmission since you are already driving on the opposite side of the road and navigating sheep and roundabouts!)
Beautiful scenery, perfect weather, adorable B&B's, lobster festivals (very tasty and very messy which is why they give you a bib!), sunset sailing and much more!