Stayed concierge in July ~ there were no longer water bottles that you could help yourself to, but the lounge attendants were happy to get you as many as you liked. They were the perfect size to carry around without weighing your backpack down.
I don't like buying the water in the park, the price is ridiculous and they are huge & heavy. I know I can get water from any counter service, but it was nice having a small bottle in my bag while waiting in line
Can I bring my own from home? Sure. But it was a nice perk while it lasted