What additional documents do I need to show when arriving in Thailand to obtain a 6-month stamp with my visa?

When arriving in Thailand with a visa, you will only need to show your visa inside your passport to receive the 6-month stamp. It is important to ensure that the immigration officer can easily see your visa to avoid any confusion with visa-exempt entries. If you have a sticker DTV visa obtained at a consulate, simply present your passport opened to the page with the sticker. If you have an eVisa, print it out and show it along with your passport.