🚨 UPDATE: People who received their Thailand Pass before March and travel from 1 March onwards, will be entitled to an exemption. No need for them to stay at an SHA++ hotel and do an RT-PCR test on Day 5. They can seek a refund.
Depending where you are flying into and if you are fully vaccinated
These are the rules for Phuket I m not sure of the rules for flying into Bangkok
If you are fully vaccinated
at the moment you need a visa for that amount of time, covid and health insurance, accommodation in a Sha plus hotel for one night, booking for a covid test when you arrive in Thailand at the moment these are being done at the airport then you have to go directly to the hotel you are staying in, the hotels usually arrange the transport as they have to be Sha plus drivers. After you have booked your hotel and test you can then upload the Thai pass the hotel usually give you the link.
Theses are the requirements that start 1 March, so could change again closer to the date you are coming in. Also need a test in Australia for airlines.