Good question!
I love coconut water.
I box, and drink it after every workout
MUCH better than gatorade.
Anyways, I don't think I have seen it in the parks.
But last time, DH & I just bought some at the supermarket and kept it in the fridge in our room. That is always an option
I will be there in may...if I find some, I will let you know!
I've never looked for it, but I can imagine that if I'd seen it anywhere in the parks I would have said "what's that?" and remember it, so no I don't believe so.