wow you're lucky. Surely you've met some dodgy people though in 27 years. It's as believable you haven't as a guy saying he's never had a fight with he's Thai wife of 27 years
The most honest? Hell man if I introduced you to Da, Poohcat, Mi, Pla, Mie, Cee just to name a few you'd think there'd be more honesty in a cabinet meeting
your biggest issue I believe when you get to poipet is the time frame before you fly out of Thailand as it looks like it's in 47 days which is well over the 30 days. If they want to deny you that's a good reason. Have you got your train to Laos ticket already? If so you might need to flash them that. I'm not saying it will be ok but if the IO has any decency about them you should be ok.