If you are in Thailand, one of the dish to eat is a simple
Pad Thai noodle (a favorite local Thai dish that many restaurants or chef will serve)
https://en.wikipedia.org/wiki/Pad_Thai
I do not suggest you travel to any specific restaurant to eat but you can always eat this dish anywhere in a restaurant.
You can eat this dish in some variety at Golden Mile Complex restaurants but somehow the taste lose out to those you can eat in Bangkok or anywhere in Thailand.