Can anyone tell me if there is anyplace I can charge my cell phone in the park? I have an iPhone 5 and for anyone who has one they know the battery life isn't great on these phones. Especially because I will be using it a lot to take pictures, mousewait, etc. Is there any place we can sit down for a snack that might have a wall plug that I could plug my phone in for 15 minutes or so, just to get some extra juice. Thanks for your help.