I have dtv visa i get in march this year and i stayed 180 days after that i travel to vietnam for a week and come back and that time their is no new visa rules and they didnt ask me anything and i came normally without hustle . But if i go again and come back do i need to show them proof of 500k in bank acount and also does i need to show my soft thai activities program again which is already completed but this time do i neeed to show again ?