Instead of individually following each cruise line, you can simply follow this list for convenience. The list contains both ocean and river cruise lines from small to large. Some cruise lines are generally not marketed in North America and therefore do not have an appropriate English language twitter account. In the event a cruise line had multiple twitter accounts, the account which was most relevant to the North American marketplace was used.
@amawaterways_uk (no U.S. account found)
@CelebrityUK (no U.S. account found) @CostaCruise @CruiseWest @crystalcruises @cunardline @DisneyCruise
@easy_cruise (line ceased operations for 2010, no word regarding 2011 or beyond) @FredOlsenCruise @gapadventures @HALcruises @HurtigrutenUSA @LindbladExp
@MeinSchiff_TV (for TUI Cruises, Germany) @MSCCruisesUSA @NCLFreestyle
@Ocean_Village (line ceasing operations at end of 2010) @OceaniaCruises
@pandocruises (U.K.) @Pandaw @PaulGauguin @PrincessCruises @regentcruises @royalcaribbean @SeabournCruise @SeaDreamYC @Silversea @starclippers @thomsonholidays @UniworldCruises @VarietyCruises @VikingRiver @voyageantiquity @cruisewindstar
The most glaring lack of a twitter account was a North American or U.S. based Celebrity Cruises twitter account. Hey guys… if you need help, surely your big brother Royal Caribbean will lend a hand.
The following cruise lines had twitter accounts that were either inactive or appeared to not be legitimate:
Azamara Club Cruises Hapag Lloyd Cruises pullmantur Cruises
And the following cruise lines, typically smaller niche operators, had no evidence of a twitter account:
American Cruise Lines
Blount Small Ship Adventures Captain Cook Cruises French Country Waterways Galapagos Explorer Imperial River Cruises Louis Cruises Marine Link Tours Nomade Yachting Bora Bora North Star Cruises Orion Expedition Cruises Pearl Seas Cruises Saga Cruises Sea Cloud Cruises Star Cruises Steps of Paul Coastal Cruises Victoria Cruises Voyages of Discovery