Wow....we..(my sister and myslf)...will be getting off the ship as you get on....our first trip.....and yes, the zoo in Jax is very nice....if it's too hot they even have misting stations to cool you off....the train is a good way to get around the park and see in general, but you will have to walk to get to some of the animals. All in all will be worth the trip....matter of fact, it is just down the road from the ship...LOL...Have Fun!!!!!!!!