Original sentence: The service becomes available "appoxamitely 15 minutes after the doors close (main-cabin door)".The service generally is functional from departure gate to arrival gate.The service is free to first-class passengers; the cost is $6 in the coach cabin, with only credit cards accepted
Edited sentence: The service becomes available "appoximately 15 minutes after the doors close (main-cabin door)".The service is free to first-class passengers and is available for a charge in the coach cabin