Slightly off topic, but relevant I think. I have lost count of the people who Dj'd for me and were so excited and buzzing because the decks were set up properly with minimal weight on the tone arm, new styli fitted, and the system set up so that their records could be heard clearly throughout the room. When you have gone without the good things in life and spent so much time and money collecting records that move you so much. The last thing you want to do is play them on a system that just sounds like a boom box, or drop an old heavy stylus on your treasured styrene. The feeling you get from playing them on top quality gear to a crowd of like minded individuals, so that every word and fabulous note can be clearly heard is something special.
There are many events where they have good equipment, but it isn't set up correctly. There are many with decks that I wouldn't play my records on for fear of damaging them. I know quite a few people who have got to a venue and just played cheap stuff and cuts of unissued stuff because either the decks look dodgy or every time someone comes up on stage the record jumps. And I don't blame them, but the crowd just think that he/she played a crap set
Too many promoters who totally neglect this, or just haven't a clue how to set their gear up. Never mind paying Dj's, more important to show them some respect by giving them a fantastic experience, and respecting the fact they are playing super rare records for your guests.