there is a "legend" that says that you can bribe your enter in the kingdom (especially if you live there with a tourist visa/visa exempt) with a 1000baht bill left inside the passport. The legend says that not every officer does that but you need to have a "connection" with an agent that will lead you to the right officer...
Till few months ago you could just get 30days on visa exempt. I wanted to stay one and half month and I didnt want to waste a day of holidays to apply for a visa extension in thailand so I applied for a tourist visa here (it is also cheaper, 1200$ vs 1900$ visa extension)
when I applied for a tourist visa in January (as a foreigner), I got asked to prove that I was a resident here (arc/aprc) otherwise they wouldn't have processed my request. I actually tried to apply for that visa through a travel agent but they all refused that cuz I'm a foreigner (even tho I got an aprc).If you are on visa exempt then you might have some issues when it comes to apply for your visa