The drive is easy
A few things to remember from the traveling curmudgeon:
1. If you decide to take pics of the coast or waterfalls, please please please pull over safely. Too many tourists literally stop in the middle of the highway and it is quite dangerous while people are coming around a hairpin turn
2. Additionally, don't drive in the middle of the road. I encountered way too many tourists driving in the middle of the road, or on wrong side of the road, as they gazed up from their convertibles looking at the trees and such
Lots of the locals drive fast on the backside, so watch for that. Enjoy the drive, that's part of the fun!