Port Klang is an industrial area and the port for Kuala Lumpur. The city is approximately 60km away from the port. It is always an attraction to go for sightseeing and shopping at the city centre, recommended to follow the cruise offers for group tour for sightseeing or the shuttle to drop you off at one of the most happening shopping mall in town ~ Mid Valley City.
Taxi or public transport are not easy. Charted taxi or limousine is a better ideas since it takes you around 60-90minutes to get back to the port due to traffic.