The area is not lit up, but there is overflow lights from the hotel itself.
The animals aren't out much after sundown, but are best seen between 5:00 pm and 7:00 pm (feeding time). Mornings are good too, but that's not what you asked about.
There are some tables that are along the windows that will afford a view of the outdoors, but not many.
Don't go there expecting to dine while watching the animals, and you won't be disappointed. Well, you won't be disappointed in the view.