Explorer121

We are doing a 9 day cruise above next month from Sydney, hitting Tangaloona/Moreton island, Arlie beach, Cairns, and Willis Island. I have looked at excursions thru Carnival and nothing of much interest. We love to snorkel and want to really do a lot of it in and around Great Barrier Reef. Can anyone recommend a good local private or small tour/excursion for any of the above stops? We would like to snorkel at least 2 days and which stops will offer the best for the Great Barrier Reef? Is snorkeling the wreck island worth it at all in Mireton? We are also open to any other great tours/excursions anyone can recommend. TIA

The ship docks at 5am. What is the earliest time they will let off passengers? I’m looking at flights and would like to get car service at 6:30am to the airport. I plan on carrying all luggage off the ship to be one of the 1st group out. Also for a Friday morning, how much time do you think it will take via car from Dover cruise terminal to Stansead if I can get a car at 6:30am?