I actually read that he was wading in the water and that his sister was on the beach in a pen.
"Wading in the water" for a 2 year old that is 34" tall, can't swim, is from Nebraska, at 2 hours past his bedtime that law enforcement said was "a foot out" from the shore or about 3" of water. He was standing in a puddle. He's 2. You realize this, yes?
This family was not night swimming in a lake. They were walking around on a tiny beach watching fireworks and an animal came up out of the water and grabbed the small shadow that was splashing around. The family is not to blame for being at the edge of the water, they get the best view there and it's encouraged. The only warning is "no swimming" and they weren't swimming.
Oh, and here's what we non-Floridian's learned today: People shouldn't encourage families with small children to congregate near water in the dark because apparently there are alligators down there who are hungry. Fools like me from New York might be excused for not knowing Floridian amphibian culture; there's no excuse for Disney.