I’ve done this a lot. I’ve learned that a lot doesn’t translate to the written word. I usually include something to indicate I’m only teasing when I’ve used sarcasm and such.
It’s really quite basic. There are those lacking whatever it is that would make most people think of googling or searching the group itself first, and there are those that will be rude and nasty to them because of it - indeed, there are many who are petty for just about any reason at all. The relative anonymity of social media makes it easy for both.
Naysayers aside, I wish you luck. With the right location, people, and ideas, you could very well come out ahead. If it were me, I’d see what others offer and how I could step it up or do it differently. There are a LOT businesses out there that do things “the Thai way” that might benefit from a more Western slant (that floating hotel on a river I stayed at that had toilets that flushed directly into the river comes to mind). Nothing at all against “The Thai way,” but a floating hotel with environmentally friendly plumbing would have been a first choice, lol.