From a quick search on the internet I found where Carnival has had three incidences where an engine fire left ships stranded, The Tropicale in 1999, the Splendor in 2010 and the Triumph in 2013, is that a lot? Is that enough to speculate that they have maintenance and safety issues? I mean since I have no insider knowledge of their actual practices. I mean it's kind of a dangerous game to assume you know something because of secondhand knowledge, especially if your most likely source is the internet. I mean a quick search of Royal Caribbean for example could have you believing that they have trouble with people falling overboard, crewmen sexually assaulting passengers, that their flowrider should be banned because it causes lots of injuries, they have captains that misjudge weather conditions and sail their ships into major storms causing passengers to end up with broken bones and that they dump waste from their ships into the ocean. Why would anyone want to do business with such an obviously troubled company? And all of this in less than five minutes of looking at a search engine result. In any case I just find it a little disingenuous when someone starts purporting to "know" things so specific like the maintenance practices of a cruise line. Unless you work in a maintenance position for the cruise line or for a company that does inspections of cruise ships I'm going to remain skeptical of your "knowledge". So far based on my personal experiences I've enjoyed cruises on both cruise lines with very few troubles on either and that's what I'm going to base my knowledge on.