Ok to be honest I'm a technician for d-tv for a while now. Now I'm not here to cry about how little we get paid, but we get paid just enough to get the TVs on. Its fairly simple. U want something done right. U pay for it. Again tip is not necessary but it in your best interest too do so. Like I said of coarse we get paid to do a job. The same price whether we there for an hour or 5 hrs. But you get what you pay for. Tipping makes your life easy. Smarten up people. I've never said this out loud but don't tip me. And no ones happy. Especially you the customer. Everything could be so easy.
Oh and I use every customers bath room.