Like others said, don't watch it for reality because there is very little of that and mostly it's glossed over.
My sister went to NK as part of a marathon competition happening there earlier this year and the reality she saw & experienced is waaaay worse & more harsh than how it's portrayed in the drama, at least when it comes to the "common" people, obviously she got nothing to do with the "elite" while there.
Some elements shown in the drama are true, but it's portrayed very lightly and with a sense of humour.
Thanx to my sister, while watching the drama now, I notice the things she talked about that are in the drama as well and how the way it's shown there differs from the reality. But they did include them, so that's part of the real NK.
It in no way lessens the drama to me, I watch it for the entertainment, but just adds a touch of that feeling of how you sort of become happy when you see a place in a movie you've been to yourself.
Obviously weren't there myself, but did hear first hand experience and saw photos.
I'd say the drama does touch upon the things that truly are in NK, but with humour and lightly.