A recent article from the Independent has detailed Thailand's draconian laws on Vaping. In 2014, Thailand passed legislation that outlawed the importation of Ecigs. They have since expanded this exportation and selling as well. Their legislation means that anyone in possession of an Ecig is technically breaking the law. Most travel agents weren't even aware of this, and e-cigarettes can be seen anywhere throughout the country.
This is information that needs to be passed on so please forward this to all vapers you know who may be thinking of travelling this way.