Yeah, we go there every year for the rookery season. As you noted, 6 or 7 species of large wading birds court, mate, nest and raise their young there. The gators keep all their natural predators at bay... none of them can get by the gators to raid the nests so they are completely safe. They fish outside the Alligator farm and return home during the day with the fish to feed the chicks.... and roost there at sundown or shortly thereafter... it's quite a sight to behold.... watching them all arrive at dusk. You have to purchase a special pass to be able to stay after 5 when the park closes but it's worth it.Not sure where you are in Florida, but in St Augustine (NE coast) the alligator farm has a boardwalk that goes out into the swamp/river and it's all wild waders.
View attachment 1490313
this guy I took with about 100 on a 70-200 zoom
We're about 1.5 hours south of St. Augustine, give or take so it's an easy trip. And you are right.... you can get by with a 70-200 lens for some shots.... but as you know, since you've been there, some shots are farther away from the boardwalk and a longer lens can be a plus. Even in that smaller space, I see lots of 500 and 600mm lenses, as I'm sure you noticed.
This is one of my shots from there:
Cropped from this. I did downsize it a bit for B&B: