Hello Theerayut,
I'm going to stay at Thailand for holidays in two weeks. 
I was planning to bring my Mavic with me but after Thai Law review I'm thinking it's a imposible mission. It seems I must register the drone before and contract an insurance. 
The problems I found about it are:
- No English forms for drone registration. 
- No information about how to contract the insurance. 
Could anybody help me?
Thanks in advance for all the info, advises an help you can give me.