Australians don’t need a visa to travel to Fiji for tourism. Visitor visas for stays of less than four months are issued on arrival, provided you have a return ticket and confirmation of accommodation.
Make sure your passport is valid for at least six months from the date you intend to finish your Fiji holiday and return to Australia. Carry copies of a recent passport photo with you in case you need a replacement passport while overseas.
Carry your driver’s licence with you at all times. You’ll need a valid International Driving Permit to rent a vehicle. Check requirements for motorcycle licences as driving without the correct licences can affect your insurance.
The currency obviously fluctuates, but at the time of writing A$1 was worth about F$1.50. Check rates online.