Just a heads up for TR visa holders who want to get a 30 day extension for their visa. I escorted a friend of mine to Udon Thani immigration the other day. He wanted to get immigration out of the way when he reported for TM30 after arrival. The officer on duty denied accepting his application. He quoted a rule saying visa extensions can only be applied for in the last 30 days before the leave date on his entry stamp. Kinda increases his travel budget by a couple of thousand Baht as he intended to hike around the mountains in the North. Now, he has to interrupt his hike and bear the extra time to go all the way to an office.