It is smooth as you just have to reach the meeting spot and they give you the zoo ticket and ferry trip. I really liked the zoo, you beed minimum 3 hours to explore it and could be easily 5 hours. On a money wise point, you can just buy directly the zoo ticket online, and go paying the public ferry either Saturday or Sunday and overal it will be cheaper (it will cost you max 9 AUD for both ferry trips, and it's very straightforward). During week days, the activity from this site may be more convenient.

There wasn’t enough times for the ferry. We had to buy tickets for another boat as we would have had to wait an hour for the Nxt one and same on the way back. I would not do it this way next time as we flew down for the day from the GC so had to be very specific on times to and from air port so our time at the zoo was cut short to get back on time.

The harbor cruise and sky safari were cool modes of transportation. However, the zoo was average and like any other zoo in Germany. The only special were the koalas and the kangaroos. Although I have to say that you can also watch the kangaroos in the wild in the evening. However, thank you for the offer and the uncomplicated booking.