Absolutely hilarious, so you want guests to bring their old records so the DJ can play them. So we get pass very likely the records will sound like crap. Playing someone else’s records, hum, if I did still play records I won’t want to go that route. Personally I don’t care what they do if they have the money but I’d rent them a system and they could go to town. Been there & done that. I saw the world worst wedding DJ one time to bad I didn’t have my video camera. I was on the phone with my wife giving her a blow by blow description of what was going on. She told me to leave and come back when it was over. It was like accident where you know you’re not supposed to look but you just have to. The reception ended in less 3hrs right after dinner. Yes, it was that bad.