Can I use a 30-day visa exemption upon arrival in Thailand and extend it for another 30 days?

Yes, you can use the 30-day visa exemption upon arrival in Thailand if you are coming from Australia. Additionally, it's possible to extend your stay for another 30 days for a fee of 1900 Baht. However, it's important to have a return flight booked for your initial 30 days, as airlines may deny boarding without proof of onward travel. Some travelers also inquire about applying for a 60-day visa from Australia, which may involve different requirements.