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.
Cruise ship tours: Celebrity Cruises' Celebrity Solstice. None. The 122,000-gross-ton, 2,850-passenger Celebrity Solstice was the first in a series of five extraordinary, futuristic and cutting-edge cruise ships built for Royal Caribbeanâs premium market Celebrity Cruises division.