First border bounce don’t worry, if you decide to do another I’d advise going with a border bounce company that normally means no issues. Most major tourist hubs offer this service .
If using an agent and soft power option without any soft power I.e no Muay Thai classes. People are saying when you extend for 6 months at immigration they want to see full evidence of original application. So best case is you would always have to do a border bounce. Can anyone clarify ?