Hole in the Wall

Literally I have holes in walls. We worked with the electrician last week to decide on plugs, lamp positions, on/off switches, tv outlets. Not sure if I am still ok with my decision, but hey, he already punched holes everywhere.

Living room wall sconces but not sure what are the lower holes for.

Jessica's room wall sconces. Again, why holes in the middle? The lower strip must be for the wiring to go across.

Guest Bedroom wall sconces.

Master Bedroom swing lamps. Is this the right position for bedside lamps?

Seems like the plumber was there too. Rough-in for showers are installed. They are quite expensive, over $100 each...