I go twice a year usually and absolutely love it. There's really nothing like the Nordschleife in the world. Each lap is different and bring its own challenges.
It's absolutely worth making the journey to visit.
As a track, I found my first five laps or so quite harrowing. It's an intimidating track and its reputation precedes it but I've found that after those laps you do get into a grove with it and your confidence starts to grow. Doing sim laps definitely helps but nothing prepares you for the full experience really.
I was out there at pretty much the same time as Expressivedrives and enjoyed it just as much as all the times before.
Here's a lap of my last visit:
https://www.youtube.com/watch?v=GMQQhA3AiHM