Just one bit of advice, follow the road signs to Fethiye, there aren't any for Calis from Dalaman, until you are just about there.
It is an easy drive, once out of Dalaman it is one road, the car hire rep should be able to point you in the right direction. but it is not English roads, If travelling during certain hours of darkness, traffic lights are set to flash, this means proceed with care, whatever colour they are.
You normally return the hire car with the same amount of fuel as you recieve it with, take a note.
You will need two and a half lira for the tunnel, or else you have to go over the mountain, not recommended for your first drive in Turkey.
Don't forget they drive on the right in Turkey (sometimes:D).
I hope this is helpful. I would normally hire a car anywhere I have travelled in the world, but it took me 7 years before I had the nerve to try it in Turkey.
Baz
