Hi Stewart,
Not been up to chaing mai, but i hear its very nice! I'm down south in Koh Tao (next to Samui )
On day 16, still no beer! It gets alot easier after the first week, still have the devil on my shoulder and in my mind saying that there's nothing to worry about and that its ok to have a beer now, but i know better than that! been keeping busy by going to the gym to take my mind off things and also to help me sleep.
Hope you are doing well.