BeerGirl and I went on a trip last month and the hotel generously offered these waters for the modest cost of $5.00. That's not the reason this is here. Click the picture to enbiggen.
Right next to that $5.00 is the line "A charge will be added to you account upon consumption". UPON CONSUMPTION. How do they know? Cameras? Fluid sensing bottle? Spy ghosts? However it is determined, as soon as you finish that bottle of water, BAM, $5.00 added to you bill.