The guy who does the interior (and will do the carpet install) has a large shop and fenced yard area. He can get the coach inside the shop, so it will be in there for two weeks. It is also okay for them to have it outside as the area behind the shop is secure and it is in a good neighborhood.
This guy is Jon level anal. I had just painted my Scout when I took it to him and he completely covered it in packing blankets. Only the doors and tailgate were open and everything that could get scratched was covered as well as the dash.
I don't reckon he will cover the coach, but I will bet the door, front panel / dash area and the galley + floor will be covered while they have it. I will also bet he establishes a no fly zone around the coach as to not get the stainless scrached or dented. He is a zealot, which means everyone wants him to do their work. We reserved the date two months ago when he came out to the hanger to look the coach over. He mostly does classic cars, hot rods, boats & RVs.
Oops, I forgot you asked about the seat. You just unbolt it and remove the air line / unplug the electric and take it out. The pedestal and all comes out.