One of my favorite politicians is a US Senator from another state. She tipped me off to this a while back and I thought she was kidding. But then I checked it out, it certainly is a fact, I can't find evidence where the cruise industry has taken this up though. But reviews posted on TripAdviser have resulted in lawsuits and they own C.C. Apparently other members of Congress have began to be concerned as well since pertinent legislation was recently introduced.

"Did you know that by purchasing goods or services from certain companies, you might have agreed to fine print like this? "Leaving a negative online review of our restaurant will lead to a fine of $250.00 per day it is online."

http://www.blogherald.com/2011/07/11/how-a-giving-a-bad-review-can-bring-you-legal-trouble/

http://pagesix.com/2014/08/04/hotel-charges-500-for-every-bad-review-posted-online/

http://www.alternet.org/civil-liberties/filthy-dirty-rotten-stinking-hotel-fines-couple-leaving-bad-review

 "the Consumer Review Freedom Act was proposed in Congress in September and is still in committee."