FWIW, my last two trips on the NEX, in December from NRT to Shinjuku and back, and last week from NRT to Shinagawa and back, sitting the the green car, nobody has checked my ticket. The conductor walked through the car a couple times, but never asked to see ticket. I thought it was odd...
Originally Posted by
motytrah
All seats on the NEX are reserved. A conductor checks the tickets.