when we were there in December, we witnessed a very cute proposal during the Animal Planet show. Gentleman and soon to be fiance were seated in the area (unbeknowst to soon-to-be fiance) where the bird retrieves the dollar. Of course she was selected to be the dollar bill holder.
The act went on like usual, jokes about now holding a $50 up, etc. But then it changed a bit. Guy on stage asked if she was so-and-so. Said the bird had a message for her. Sent the message back with the dollar bill. By this time, guy is on his knee with ring as she reads the note. They were on an aisle, so he had moved out to the aisle. Tears ensue (from audience and bride-to-be)- guy on the microphone asks "Well"? She says yes, whole audience claps and all leave with big smiles.
It seemed very special as it was incorporated into the show.