I visited Australia for a month in the early '90s. My father accumulated enough points flying from SF to the east coast attending his relative's funerals to qualify for a free round trip anywhere in the world and he gave them to me. I took a month's leave from work and flew over in October. Perfect timing as that's the start of their spring.
I flew into Sydney and toured the country using a variety of means. Rented a cheap, older Backpacker friendly car (if it breaks down you're responsible for getting it back to the rental agency. Never did.) Visited the Blue Mtns in Kaloomba, rode the Zig Zag Railway in Lithgow and drove through the fantastic open air zoo in Dubbo. After returning to Sydney I arranged a Class C rental RV relocation from Sydney to Cairns, essentially free for a week except for fuel with steep penalties if I was late. Stayed in youth hostels and Backpacker motels. Flew from Cairns to Alice Springs and took the Ghan train from Alice to Adelaide, then drove to Broken Hill, Melbourne, Canberra and the Snowy Mtns before returning to Sydney for the trip home.
I took my laptop computer and an external 1200 baud modem with me and (pre-Internet) used Compuserve's local numbers in Australia to email friends and family and check in with the RV Forum. The gear raised some questions with Customs and I had to sign a form stating I would return the equipment to the US or face paying duties to both countries.