Plain coconut water is literally just the water on the inside of a coconut. So if you can get coconuts at your grocery store you can get coconut water. I also found this recipe on how to extract and flavor the water: http://www.eatnapplay.net/2013/03/04/make-your-own-coconut-water/.
About Celebrity Solstice. Celebrity Solstice is a large ship, carrying 2850 passengers and 1246 crew, and sails from Sydney, Australia and Auckland, New Zealand.
Celebrity Solstice left Meyer Werft on September 28, 2008, and arrived in Fort Lauderdale on November 3, 2008. Subsequently she embarked on a series of short preview cruises for travel agents and dignitaries. On November 14, 2008, at Port Everglades, Fort Lauderdale, she was officially named by Sharon L. Smith.