How does the bench come out?

Have a helper as mentioned earlier and instruct them to lift the seat high enough each time you move it on the way out and back in through the door to keep the mounting studs from dragging on the floor. They could damage your carpet and WILL damage the sill if they are dragged across it.

My wife helped me with mine after just painting the car. She tore up the paint on the sill. Not a huge deal because I hadn't put the sill plate on yet which covered the damage but if the plate is on they will gouge it.

The bench seats are heavy and awkward to maneuver alone while hunched over in the interior.

I had a sheet under the front, rear and the carpet. The rear seat one was in the best condition.