While it is a bit daunting, if you prepare yourself a little it is very doable. There are plenty of people who just take it easy out there, and most drivers are experienced and careful enough. The most important thing is to keep a close eye on all your mirrors for those fast cars that come up at twice your speed, and that you know how to signal to oncoming drivers that you're going to keep out of their way ... In that respect, a game like Gran Turismo is a great preparation, because it has modelled the Ring to within 3cm, so I knew the track by heart beforehand and knew where I could floor it, where the blind turns went, and therefore where I could safely drive to let that M Coupe or Veilside Porsche GT pass by.
If it rains, though, either go real slow or don't go at all. One of the great things about going to the Ring is that even when you're not driving, you're having a great time just looking at all the cars there. As a general rule of thumb, you'll see at least one unreleased car drive around each visit you go there.

I saw among others the Golf V, the then latest model Focus, and two new versions of the BMW 3 series being tested, just that one day.