Oh my! I've only heard good things about the atmosphere in the Betze
And yep, 1860 and Augsburg are derby rivals alright. Actually, their match in like the 1970s was the 2nd division match with the most attendance (80,000-100,000 estimate!) xD
I'm inclined to believe it, since an FCK fan told you yourself, but I guess we should take that with a grain of salt