Yellowbean,

Having a van and driver is very expensive. Since I don't know what your budget is I would say if money is no object hiring the chauffeur-driven van would be a carefree way to travel around Ireland. If, on the other hand, you are trying to save money renting the two cars would be a good option. You can also buy two cell phones to keep in communication as you travel around.

With the cars you would be separated during the driving times. However, you are probably going to be stopping at a lot of places and meeting up for your sightseeing. Only you can determine what is best for your family.

Michele