GO.
Period - end of story. You just need to go.
Seriously, though - I have been to a number of butterfly atriums and this one was definitely my favorite. (we didn't do the maze thing next door, just the butterfly place). Very interesting film on the front end (SUPER interesting). The Atrium itself is the largest I've ever seen. The number of butterflies was almost overwhelming (it might be the time of year). There were a few times that you looked up and almost felt a bit of vertigo because so much was flying overhead.
Lots of different kinds, colors, sizes, shapes. You just can't go to a place like this and leave in a bad mood.
Stop what you're doing and add it to your to-do list now. You'll be glad you did.
(ps - I read a couple of reviews about the room temperature... uh, it's kind of expected when you go to this kind of facility. I went 4th of July weekend, it was perfectly fine and what I expected)