I'm not sure if this is the same one, but is that the one along alligator alley into the Everglades?
We went to one, not much to do. Tram (think Disney style when you arrive at their parking lots) took us to this Tower where you saw a whole mess of gators sunning themselves. There were some trails you could take through the swamp, but...you are at ground level with the water. We didn't want to run into one because it was nesting season, so we didn't know if there would be any nests. And, if there were, they aren't posted either. Too dangerous.
It's good to go if you've never seen a gator before.