Generally, I believe they speak Thai.
I believe some do converse in Pali, but it's more a peesonal, 'private' thing... we had a thread on this some time ago..... Others may be able to point you in the right direction.
Pali in general, is the written language of the suttas.
It is not usually a spoken language, as any current global language, commonly used, is...
Although of course, I am prepared to be proven incorrect.
You will not be punished FOR
your 'emotions'; you will be punished BY
Pay attention, simplify, and (Meditation instruction in a nutshell) "Mind - the Gap." ‘Absit invidia verbo’ - may ill-will be absent from the word.
And mindful of that, if I don't respond, this
may be why....