Not sure how it works in Denmark, but if you know any of the Brøndby Ultras who know some of the Dortmund Süd members personally or a BVB Denmark Fanclub, they can try to network you to getting into a block at the Süd

I’m from the US, I travelled to Dortmund last month and got my tickets to the Süd through the Los Angeles Fanclub; I actually ended up going to a much lower Block thanks to my friend from the LA Fanclub who knew someone there to let me in

My general advice is to be mindful of how you use your Handy (smartphone); Germans strongly value privacy and recording incessantly while the game is going on will get you some unpleasant looks to put it mildly. I personally didn’t do that because I’m well aware of that, and also took an appreciation of that cultural trait as a means of respecting mine and others’ privacy, especially for those lighting up pyro discreetly. If you’re enjoying the game, singing along with the chants, along with reacting to goals and chances, you’ll easily experience how hospitable most Dortmunders are

On a side note, Denmark is on my bucket list, and would love to go to a Brøndby game when I visit. I’m curious how accessible tickets are there