Not sure if I should carry coins for public transport in Norfolk Island or if card payments are common. Advice?
My experience was that public transport on Norfolk Island is a cash-only business. I was advised by my hotel to have plenty of cash on me for all transportation. While some larger tourist places might accept card payments, a taxi driver on the street will expect cash, in Australian dollars. It's just simpler and more reliable to use cash for all your taxi rides.
I found public transport on Norfolk Island to be a very simple cash-only affair. There's no bus system, and taxis are the most common way to get around. They are cheap, but the drivers will only accept cash, in Australian dollars. My tip is to make sure you have some small bills on you. A $20 bill might be a problem for a driver who doesn't have change, so have some $5 and $10 bills ready.
The transport system on Norfolk Island is a cash-only operation. The taxis only take cash, and if you are hitchhiking, you will be expected to pay a small fee in cash. My advice is to carry enough Australian dollars in cash for your entire stay. While some hotels and major shops might accept cards, for transportation, cash is the only way to go. The only ATM on the island is at the Commonwealth Bank, but it's a good idea to have a backup.
For getting around on Norfolk Island, you should absolutely carry cash. There is no formal public transport system, and you'll rely on taxis or rental cars. The taxi drivers only accept cash, Australian dollars, and a rental car is usually paid for in cash or with a card at the rental agency. The local community is very friendly and offers rides for a small fee, which would also be paid in cash.