Re: reassembling your bike after shipping, you'll want to know where everything was regardless of who reassembles it.
So put a piece of masking tape around your seatpost.
Mark your stem and handlebars unobtrusively with dots from a Sharpie (a silver one, if your stem and bars are black).
You shouldn't have to take your saddle off the seatpost, but if you do, you can mark the rails and the tilt adjuster with a Sharpie, too.
Or if you can't stand the thought of marking it all up, take measurements and record them.
Speed comes from what you put behind you. - Judi Ketteler