I don't tape anything behind my table. The only one that should be back there is myself.
On rare occassion, if I have a stubborn cord that I seem to have an issue with, I tape it down.
You have a lot more involved in your set ups. TVs, Totems with Moving heads. 30+ yards per event? That is nuts though. I can see it when you have long runs to those totems though.
With your DJ console now exposed in front of your facade, you will be using more tape.
Another downside for using so much tape, is that adds to tear down/load out time. I am a 1 man show, and many of my venues, the catering staff is completely done cleaing up 40 to 45 minutes after a reception ends, and the venue manager is waiting on the DJ to load out. I'm quick, but if I have to pick up 15 or 20+ yards of tape off of cords that adds more minutes to me getting out of there.
Totems may require a assistant helping me tear down...especially if I am also doing up lighting.