Try opening an account and looking up your reservation on the ANA website; it will not put your ANA number on the reservation unless you specifically request it.
One annoying footnote I noticed: codeshare flights are not eligible for meal reservations, including flights on ANA metal if booked under another airline's flight number. So not "all" ANA business class passengers will actually be able to use this service. I wonder if this means codeshare pax won't get their choice of meals and will just have to take what's available.