The platform described as 'A new Harry Potter-style Platform' is prepared not only for generating luxurious room, but also excluding 'train spotters(Toritetsu, 撮り鉄)'.
In addition to it, a train which is not in service stopped on the track neighboring to the luxurious train to conceal the luxurious one.
Why does JR East keep train spotters away?
That's because train spotters in Japan are increasing ,and some of them may enter tracks or stand on the edge of platforms. These behaviors are regarded as dangerous in Japan, where urban trains are running in high frequency and high speed.
It would take a long time to enlighten them.
Shiki-shima: Has Japan just launched the world's most luxurious train?
http://edition.cnn.com/2017/05/03/travel/japan-luxury-shiki-shima-train/index.html
