Here are some of my notes from posts on cruisecritic.com on Sydney as a cruise stop:
Louisbourg and car rental:
pc.gc.ca/eng/lhn-nhs/ns/louisbourg/index.aspx Louisbourg site
"We used City Wide Taxi in Sydney. Met us as we exited the ship with sign. Kent was our driver. He was excellent. His van held 7 people; he took us to Louisbourg waited and then took us back to the ship. He even stopped twice so we could get coffee from Tim Hortons. I highly recommend him. We spoke directly to him before the trip.
We were on a Princess cruise which arrived at 1:00 pm. You can imagine the mad dash to get off. While there are taxis available all were gone by the time we got out. But, Kent was there waiting for us.
The cost for the taxi and admission was less that the ship's tour and we able to stay longer at the fort"
Edited: 01 September 2011, 7:34