G’day Peter, I came in on a non-o 90 day visa with a single entry, once here, I went and seen Anna’s visa in Hua Hin, their a one stop shop, Thai SIM card as you need this both for immigration and the bank, retirement visa, multiple re-entry, drivers licence and bank account,
After security, don’t go through the electronic passport gate, over to the right, there’s security guys, go see them, you can get your re-entry permit there.
If your coming to Hua Hin Chris, go to Anna’s Visa, you can look her up on Facebook and book an appointment with her, they do everything for you, Thai SIM card, retirement visa, bank account, multiple re-entry permit.