We never tried to order a water with our card, but it was my understanding it did not include bottled water.
Carnival Elation March 11
Carnival Imagination Sept 07
Carniival Sensation Dec 06
RCI Sovereign of the Seas Sept 06
Carnival Miracle Sept 05
Carnival Glory Sept 04
Carnival Fantasy Jan 04
It does not include bottled water. I purchased one bottle of water, then kept it refilled from the tap.the entire 7 days of my cruise. Something else to consider, if you want to bring along a sports type bottle (or buyone as a souvenier <sp?>, you can keep it filled with iced tea or lemonade from the Lido Deck as well.