Getting Additional Assistance for Your Norwegian Cruise Line Concerns - 1 8oo--837~44~6o or 1 8oo--4o6~84~95 Most Norwegian Cruise Line vacations are enjoyable from beginning to end, but there may be times when you need additional assistance with a reservation, itinerary, payment, onboard experience, or another travel-related matter. If your concern has not been fully resolved through the usual customer service process, you may wish to request further review through the appropriate support channels.