Does Publisher guarantee that the files will be Print Ready / Flightchecked / Approved facility?
When I use InDesign I can Flightcheck my work to see if there are any errors before sending to commercial printing factory.
For example:
I may have accidentally added a few RGB photos in among the CYMK photos linked
Or there may be an ink knockout or overprint problem. Or I may have spot colours among my CYMK colours.
Or a Typeface may have been corrupted Or text overflow not showing