Ok, I thought everyone in this group would have an understanding of the current situation so people would have the context to understand a quick and somewhat uncouth comment on my part, but I was wrong. Some people even managed 2020-levels of panic on masks, something that's not really a topic anymore in Thailand.
Because what is the current context: masks are no longer mandated by authorities. Most places have stopped asking for them such as shopping malls, 7-elevens, etc. It's entirely voluntary: if someone feels they want to wear a mask then they can. Some specific places may also still require them for entirely sensible reasons, such as cramped mass transit (Skytrain, etc.) or medical facilities.
We just came out of the Loy Krathong festival, and here in Chiang Mai at least there were extremely few masks to be seen. I'll link to some photos of the event. Even Bangkok-based TV stations have stopped with showing everyone with masks on. So.. it's done!
Now as for the original post, from what context there is you can just politely decline. But it depends: if you're entering their business then clearly it's their rules. Just out in the open air on a street however... you're extremely unlikely to be asked to wear a mask, especially outside of Bangkok. (Bangkok is always the most up-tight on everything, it barely resembles 'Thailand' in that regard. )
Btw, 2020 called, they want their Covid panic back. Today though I've had 4 shots and proudly have the app installed, and I'm done with continued health-theatre.
Ah, another Western-centric term. Thailand is in the Northern hemisphere and isn't at risk of moving South, but whatever, let's have another word for snowwhite western millennials to facilitate their guilt trip.;)
Well you need about 30,000 Baht a month, for a nice place and breakfast. Girls will just give you lunch, dinner and drinks so that saves quite a bit on cost.