They do not accept any credit cards. Use cash only. The fare between Narita and Sendai is about 13,500 yen. It is simplest to use the entrance where a person is at the window. Show both the railway and Narita Express ticket.
Signs flash in Japanese and English.
Note the time or the train number written on the left side of your ticket. Your train will leave from either Track 1 or 2. Car number locations are written on platform signs. At Tokyo Station - You will change trains at Tokyo Station. The Narita Express line is underground, while the Super-express train to Sendai is above ground.