The guide was very informative! He started talking in Sydney and basically didn't stop until we got to the zoo; the same during later trips. Only on the way back you're going to want to have a magazine of mp3 player. The zoo is awesome and you can touch a koala (for free)! The dolphins took a long time to find during our tour, but we finally found them and they too are amazing. Sand boarding is fun once or twice but after that I decided to just watch other people fall off their boards. Very good tour, I definitely recommend it. Oh, right, don't go for the lunch as there are many restaurants available at the harbor