A lot is being made of these "No Swimming" signs and limiting Disney's liability. I have a couple issues with that.
1) I am a rule follower. I don't try to find ways to get past the rules, generally, or to violate them in spirit even while not breaking them literally. That said, though, even I would not interpret "No Swimming" as "don't touch the water with your foot." I don't think the signs are adequate for the danger. If you had an electric fence, you would have a big bright sign that said "DANGER: 40,000 VOLTS!" not a nice, happy looking sign that said "No Climbing, Please."
2) I lived in Orlando. My brother lived in Pensacola. I know there are gators in Florida. However, the whole selling point of Disney World is that it's an imaginary, artificial environment where only good things happen. I think there's an expectation among guests, and one that is specifically cultivated by Disney, that Disney has "though of everything" and taken care of all foreseeable issues. That's why it's so surprising to me that, even though it's Florida, there are alligators in the lake and Disney doesn't do more to either get rid of them or protect guests.
Look at it this way: for a flat ride that has no really dangerous elements and can't hurt you in almost any conceivable way, there is still a height req., a seatbelt, someone to come check your seatbelt, a sign warning you about heart conditions, a camera monitoring the action, etc., etc., BUT, for the alligator infested deathtrap, there's a sign that says "don't swim" and a man-made sandy beach front where they host movie nights.
Love Disney, don't want to see them get bad publicity or for anyone to "stick it to them", but I think they shoulder some blame, here.