The JNTO operates Tourist Information Centers to aid travelers. The TIC are located in Terminal 2 of Narita or at 3-5-1 Marunouchi, 1st Basement Floor, Chiyoda-ku, 03-3201-3331 (located near Tokyo Station). Here you can acquire maps and assistance. Office hours are 9 a.m. - 5 p.m. weekdays and 9 a.m. - noon on Saturdays.
In addition to the services provided by the JNTO, visitors to Tokyo can visit the Information Bureau of Tokyo located at Tokyo Station (hours: Monday - Saturday, 9 a.m. - 6 p.m., located near the Yaesu entrance). This office only deals with issues relating to Tokyo. Visitors are also advised to pick up a copy of the Tokyo Journal which provides coverage, in English, of happenings around the city. It also covers subjects such as restaurant reviews, schools for learning Japanese, and other items of interest.
Other services for tourists include Japan Travel-Phone -- a phone service that offers travel advice and information in English. The Tokyo number is 03-303-4400; outside of Tokyo, you can dial 0120-222-800 or 0088-222-800. There is a per minute charge (¥10).
American Express -- For 24 hour service and information in English, call 0120-376-199; for emergency card replacement service or ATM service, contact the office in Chiyoda-ku at the Yurakucho Denki Bldg, 1-7-1 Yurakucho, 81-3-3214-0280, open Mon - Fri, 9 a.m. - 7 p.m. and Sat - Sun, 10 a.m. - 5 p.m.; another office (with ATM service) is located at the Shinjuku Gomeikan Bldg, 3-3-9 Shinjuku, Shinjuku-ku, 81-3-3352-1555, hours are daily 10 a.m - 6 p.m.