Tuvalu's correct, this isn't a new change.mit began a few year's back due to two main factors based on guest behaviour. First, they discovered that when people were checking out many would empty the refrigerator of every bottle and put it into a bag or container and leave. That was never the intent and if done after staff left for the morning denied other club level residents of bottled water. And yes, the costs of this guest behaviour were substantial.
The second factor was guests taking bottles during their stay and leaving them in their rooms, usually refrigerators. Even if not opened the bottles had to be thrown out due to health regulations and this was also creating costs both in multiple cases of water per month and the disposal costs.
The CL manager I talked with about the issue said that their budget was always being stressed by the problem, after all they are given only so much budget to work with, and the costs were very high. It became recognized across the resorts and the current water dispensing method was the result. And yes you can ask for bottled water and will receive a large glass bottle. Now the manager tells me the costs are back to where they should be and they are no longer taking budget from other areas such as food and juices to cover the water costs.