It's going to be a three day process. Today they are doing all of the plumbing in the garage. They already managed to smash the WW2 Reeinacting picture that used to hang on the wall at my old Army job. At least it was the picture of the Allies, not the one I myself was actually in. These guys are all Armenian and some of them are fairly old so I took that other picture down.
It seems most of the internal work can be done through the shower stall in the master bedroom - which has to be ripped out in order to get to the pipes. Procrastination pays off well in this case - this particular shower stall was unusable when we moved in and in the 8 years we have lived here we never fixed it. Had we done so, we would be destroying the new stall to put the pipes in. As it is, there is no loss.