I wouldn't say I'm the most knowledgeable in this regard but as far as I know it's not super common. Buddhism in Thailand is strongly tied to making merit[1] which is more or less doing good deeds. And generally, this is seen as something to be done regularly as a part of daily life as opposed to taking a break out of normal life for it. That being said, I'm sure there are still plenty of folks who do so, but at least in my experience it was primarily non-Thai folks doing so.

[1] https://en.wikipedia.org/wiki/Merit_(Buddhism)