I did Wild By Design and had a great time. You don't see any behind the scenes stuff, but you get to talk to Animal Handlers, who share alot of interesting info on how they take care of the animals. Also, there are a hundred little stories that go with all of the details you see at AK, such as the ruins you pass through during the Maharajah Jungle Trek, etc. All of these things have detailed back-stories that you will never hear unless you go on something like this. It was a very fun tour.