WASHINGTON, Oct. 21 -- Amtrak (National Railroad Passenger Corp.) issued the following news: * * * Amtrak's 'Twice as Nice Sale' Lets Travelers Bring a Companion for Free on Roomette Bookings * For a limited time, travelers can bring their favorite plus one for no additional cost WASHINGTON - Amtrak is making it 'Twice as Nice' to experience long-distance train travel this season on America's Railroad. For a limited time, customers booking a Roomette can bring a companion along for free to  more