it is not like airports try to hide their taxi’s right lol? Of course he should follow the big illuminated bright shining neon signs saying TAXI.. (which also come with nice helpful arrows pointing to where they are)
but if paying at the airport leaving he will pay the fine and possibly get a ‘ban’ also… best to spend some money on legal person to 1. Pay fine and 2. Exit strategy and 3. Be allowed to return to Thai.
Maybe a good idea not to use your real name on Facebook if you are trying to arrange a dodgey Visa.. IO often troll through Facebook groups such as this... you could find out that they might just be 'waiting' for you 🤦