I've seen conflicting information regarding the green VIP bus in Chiang mai, whether it still exists? Does it still go to chiang rai? Thanks.

Our understanding from reading here was that we didn't need to wait until the last couple days to go extend, border bounce, etc., as the new 30 days (usa) would be figured from the previous end date and not the day of crossing. We went up to Chiang Rai and crossed at Mae Sai. They only stamped us to Dec 15th, not the 23rd as it should have been. 😢

*Update

Just crossed back over the Mae Sai border (30 days visa exempt). It took only a mater of minutes, and no questions asked. I had 25k I'm my pocket in case questions were raised, but it all went smoothly. I spent the night in Chiang Rai, but it's easy to do a same day trip from Bangkok if you wish to do so.