I've heard from multiple sources that Dasani is available everywhere in WDW. CL has large bottles available to guests and sometimes has small bottles available. The stores and CS carry it, too. Dasani is Florida water processed through reverse osmosis, which removes most of the bad taste. Personally, I drink so much water that I'm having Staples deliver a case of pure spring water (Zephyrhills) directly to our resort. Then, I'll just grab a few bottles from our fridge every morning. It's a small expense (compared to staying CL). Inside the parks, Dasani is still available but at a much higher cost.