2 visa exempt stamps per calendar year at land borders. Unlimited if you have an actual visa.

Unlimited

A 90 day report is trivial. Why would you leave?

Well of course. Why would you leave if you can just go to local immigration office and report.

I'm Australian too. I got an O-A. It's a little difficult to get but pretty straight forward if you follow the instructions on the web site. It gives you two years of trouble free entry although you will need a re-entry permit in the final year if you plan to leave Thailand. The main advantage for me was that you don't need funds in Thailand. You can show Australian funds including Superannuation. This gives you time to establish yourself, open bank accounts, get a lease, get drivers licences, etc without committing too much.

O-A visa requires 90 day reports.

Sorry but how does a UK bank account generate income. Ok, a term deposit maybe. Or a million quid earning 2%. (This is just an example not an actual calculation). Income is from a pension or rent, etc? Money in the bank is capital, not income.

It's a common Thai name. You never heard the name Lek or Noi?

Yes I just got mine online from NSW police, as I recall.

Just go from bank to bank till one opens one for you. Get a letter from your hotel saying you're staying there. They issue you the ATM card and bank book on the spot.