I see others do too, don’t seems to be the problem. If it’s the law that I have to turn it off when parking I would. Most of the time I just park and turn my emergency lights on and let the engine run. I wouldn’t care if others do it too. It wouldn’t bother me one bit. You’re comment which implies that you know me because I ask a question, just shows me how a idiot you are.
Some countries engine idling Its illegal, like Germany where you can be fined for it. So I ask how the Thai laws are, if it doesn’t say I don’t need to turn off the engine then I won’t next time. Because I don’t see most Thais will do it in this hot weather and parked without air con on.