@Johan *****************
Non-O (also agent could provide) and a valid passport.
Agent will "arrange" directly with the Immigration (against an appreciations fee) and also with Bangkok Bank.
For detailed Info ask one of the leading agents in Pattaya like TikTok visa Services or Maneerat Visa Services.
First year will be the most expensive, range 30 - 40k, following years around 15k
To inquire this agents, just Google and you will have the addresses and some reviews