We visited the Everglades a couple years ago, and stopped at the Billie Swamp Safari (I think that was the name). We took an airboat ride around the Everglades, and the guy running it said, "If you fall in, I'll gladly call for help." It was amazing how quickly we were away from any sign of civilization. Just us, the boat, the water, the trees, and the gators.
I don't have my pictures online, but it was very beautiful, and we hit a gorgeous day for it. I'll try to remember to put them online and share a few.