Our wedding reception was ace – we had a guy who used to be a DJ for BRMB DJing, but he said he’d happily play anything we asked for, including our own CDs. First dance to Queen’s “You’re My Best Friend”, then an hour of ‘normal’ pop stuff, then on came the metal.
Stuck to ‘safer’ stuff like Metallica, Slayer, Iron Maiden, Black Sabbath, AC/DC, Pantera etc rather than cracking out the Morbid Angel and Emperor. Bizarrely by the time Enter Sandman came on everyone was on the dance floor and seemed to have a mystical knowledge of the lyrics, regardless of previous musical preferences.
Rammstein might be good, quite catchy and little to no swearing (possibly, my German’s a bit rusty). If they’re in their late 20s/early 30s they might appreciate some 90s softer stuff like Terrorvision and the Wildhearts.
Incidentally, headbanging whilst wearing a tiara is hard.