LL Bean sells quart Nalgene bottles for ten bucks. I imagine more cheaply-made refillable bottles will cost that much once the tourist-trap concessionare markup is applied.
So a family unaware of the ban on disposable bottles will be looking at ten dollars per liter instead of two to three bucks or so per liter for disposables. Which means a family won't be thinking about taking enough water for a hike, but what they can afford at ten dollars per pop.
Stupid. This does nothing to address bottles brought in from outside the park, and can't. It will end up causing some people to get dehydrated because of the cost per liter of a refillable bottle bought on the spot. Typical liberal shortsightedness, putting their liberal 'sustainability' concepts ahead of the well-being of individual humans.
One can find water in nearly indestructable bottles in the Juice aisle at Wal-Mart®.
Once you drink up the mixture of flavoring, colorant, vitamins and water in it, you can rinse and fill with water for your trip on the trail.