Iguazzu Falls-Brasil--Seeking Advise

So.....I'm off to the Pantanal in Brasil next month to photograph wildlife. After I'm done in Pantanal I had been planning to spend the remaining 4 or 5 days in Rio where I used to live.

However, I'm having a change of heart since I know Rio very well already and am seriously considering using my remaining free days to visit Iguazzu Falls where I've never been.

First off, if anyone has visited Iguazzu and photographed it I would love to hear about your experience and whatever tips/insights you might have.

Secondly, I'll be taking both a Canon 70-200mm and a 100-400mm II for Pantanal wildlife photography. I'm also taking 2 bodies, the 7D Mark II and the 6D Mark II. I was also planning to take an "all-purpose" lens. I have a Canon 24-105mm as well as a Tamron 24-70mm available to me. In addition, I also have a wide angle Tokina 11-16mm. If I'm going to photograph Iguazzu Fall would I be better off with the Tokina wide angle in which case I wouldn't really have an "all purpose" lens with me (I'm trying to travel as light as I can hopefully with just 3 lenses) or is there enough "wideness" to either the Canon 24-105mm or Tamron 24-70mm where I can still get good landscape shots of Iguazzu and also have the flexibility of other "all purpose" subjects. Or if you have another lens option I'm open to suggestions.

Thank You.

I was there and found that it was worth paying the price for the Hotel das Cataratas for the 24 hr access to the park. All kinds of birds come out early in the morning before the tourists show up as the park opens to public access

How early were you out and about photographing? Around what time do the crowds begin to arrive?

I was out and about around sunrise 6am and the busses arrive later. Then the birds disappear