I was issued a SETV e-visa a day late, after my flight into Thailand. I'll be leaving and re-entering Thailand by land to activate it. Evisas are common at airports, but do you think the land IO will be knowledgable of these? Will it probably be accepted without issues?

And since I just need to leave the country and not go to an embassy, is it possible to exit and re-enter the country on the same day? Will this be seen badly by the IO?