Just in case you water drinkers aren't aware, HAL does not serve water anymore in plastic bottles. Water is now in cans like Pepsi/Coke with the same style opening. They do have a twist off cap version of the can, but depending on where you get it, the bar will charge for it because the twist version is NOT included in the beverage package and is about $5.
This was the case for me on Westerdam a few weeks ago.