I have a Filipino friend. They entered Thailand once by air, got another 30 days at immigration. Can they get a further 30 days at immigration or maisai border and back into Thailand? I know you're allowed 2 by land but not sure about Filipino people
TLDR : Answer Summary
A Filipino can extend their initial 30-day visa exempt stamp once at immigration but must leave the country to obtain a new entry. Since they entered Thailand by air and received a 30-day extension at immigration, they can go to a border such as Mae Sai and re-enter Thailand for another 30-day visa exempt entry, taking advantage of the allowance for two land entries in a calendar year.