I DJ online for a radio station, and although it's been a while (actually was planing on making a return this weekend) we were based out of city of heros, and have since then moved on and broadcast live from other online games....WOW, L4D, Aion, Rift....etc. Anyways, for the most part a lot of the DJ's play rocking stuff, techno, metal, nerd core, hip-hop...and just about everything that would work well in a game while playing it... (i cant speak for everyone, but this is what i tried to do) and as much as i love playing requests for people, and to give people what they want so they can sit back and enjoy their game and a selection of music i pick out for them and that they pick as requests......there will always be someone that wants to request something that can bring flawless shows to a screeching halt, and in a blunt way....fuck the mood/vibe up for everyone.....
Now i'm not sure what type of music this couple was trying to get the dj to play, but lets say the dj was playing mostly dance music for the evening and this couple picked a cd that is no where near a dancy vibe/mood....then personally i think its the couple being selfish in a way, and really not considering others at the "event"