We were just there this past Thursday. I had not been since 1985, so I was amazed at how big the park has gotten. My family loved this park. I have two DD's 13 and 8. My 8 year old is not a rider. They have an awesome skyride that your 5 year old would love, and they also have two kids' areas with rides. One is Sesame Street themed, and my daughters both wanted to stay there.
I can't say enough about the animal interactions. The park is really focused on education, and we were so impressed with the animals. The tiger exhibit is incredible, and they do a great job of having employees answering questions at all of the exhibits.
The park was not crowded, and we easily could have spent another day there. We just loved the whole atmosphere and the ride/animal combo!
Hope this helps!