We are two couples planning a trip to Ireland in June of 2015. While my wife & I have been to the Republic two times & covered most of the country, we have never been to Northern Ireland. This will be my brother & his wife's first trip to either. All four of us have Irish ancestry but not sure where. At this point we want to fly into Dublin & tour for a couple of days then rent a car and head north. We want to visit Armagh, Belfast, Giant's Causeway & sights near. We also want to visit the Donegal area. Planning on two weeks total.
We have a few questions:
1) Are there any problems driving between the North and the Republic in a rental car? I remember in 1998 it was not recommended, but we know things have changed since then.
2) Would it be better to fly into Belfast and rent our car and reverse the trip to end in Dublin?
3) Any other suggestions for sights, experiences, places, etc. that we need to add will be appreciated.
(I know this leaves things wide open, but it also allows everyone an opportunity to share their favorites.)