Here's my post trip report.
Arrived in Narita in late afternoon, but things are so nice in Japan that we were able to get some yen from an ATM, buy a ticket on the Narita Express, missed one train by just a few minutes, but still got to Yokohama before 2100 and into our room at the Breezbay resort.
The next day, we took the subway to Motomachi station to explore Chinatown. We found Osanbashi, the cruise terminal. Determined it was best to take a taxi the next day because of luggage. We ended up walking all the way back to our hotel.
Japan is fantastic. We plan to return soon and spend a month. It would be heaven to visit an onsen every day.