He would have to prove that to the airline at check in. Clearly he will be booking an economy seat on Thai Airlines in order to be seen supporting that ailing business. ???? His choice of transport into the city may be limited.
After he 'fled' the country 17 years ago he had decided to divorce his wife. He was in Hong Kong and to complete the divorce paperwork was faced with a visit to the HK Thai Embassy. That would have put him on home ground and liable to immediate arrest. The Embassy sent a high-ranking official to meet with Taksin at a local venue to sign the papers and avoid that possibilty. Not a peep from the Thai press. In my opinion, his divorce was 0ne of convenience to avoid fallout from alleged illicit land holdings and not mutual incompatibility. She is still seen lurking on the fringes.
Looking at the lead photograph, I'm curious to know why they have obscured the face of the woman attempting to steal her watch.