Checked into St Louis Marriott Grand today and discovered this new idea in the room. Took a minute to see the fine print that they're charging $15 for the bottle. No sign of regular water bottles in the room or the lounge.

I travel with my own water bottle and appreciate efforts to be green, but this seems like a revenue generation opportunity. And seeing as this is a Marriott owned location, probably a matter of time until we see it elsewhere.