Arriving Shannon May, 2014 at 6 am. What time should I tell the car rental office that we would be able to pick up the car? Thinking customs might take some time, then perhaps some breakfast at the airport, plane may be late, etc. Really have no idea how long all that could take having not done it before.
On our return flight, how long should I be at the car rental drop off before the flight back across the pond?