[Sangetsu]

Yes, the transit workers are nice, they helped me when I bought my first Shinkansen ticket after one of my Narita flights was diverted to Osaka due to bad weather.

But transit workers are few and far between at Tokyo and Shibuya stations. Arriving at Narita at 3:30 means that after deplaning, immigration, picking up bags, customs, and then transportation to Tokyo, he should arrive at Tokyo or Shibuya station at the heart of rush hour. No doubt it will be an interesting experience, but it will make finding his way around the stations far more difficult.

The only thing I like about the Narita express is that they have a snack cart from which you can get drinks, obento, and ice cream.