Hi Sarah,
If that's what your giving for birthdays if you ever fancy a change I'll let you have my phone number

. I think I got socks!!!
Anyway back to the driving There should be no problem they drive on the right side for us Brits (that's the left)
There are a couple of things worth thinking about though. When you arrive off the flight you will be rather tired, it's a long flight and and with the time difference your body will tell you its about 9:00 even if only 5pm. It also gets dark very quickly which can make things difficult unless your close to the airport. We always stay up at Speyside which is about 1 1/2 hours drive and by the time we arrive it's pitch black.
On arrival the best bet is to get a taxi and sort a car out later.
Driving round the Island is pretty simple but always give yourself plenty of time to stop and take in the sights.
Regards
Kevin