If they know she has a US boyfriend that really hurts her chances. In any application for a US visa THE PRESUMPTION IS THAT THE PERSON WANTS TO IMMIGRATE THERE. And with you there, that is a strong reason for her to stay in US. She must have a substantial tie back to Thailand, such as substantial property or assets, a child, etc., for a successful visa application.

It’s not a problem.

The hardship isn't leaving Thailand, its coming back. You don't want to be put on the "blacklist." Be sure your passport or file is notated somehow.

Ian Cameron People routinely give misinformation

Wherever u are getting your information it is wrong

Up to the company. Why are you asking FB.

No

Do 6 mth lease.

Only bikinis and speedos are allowed.

They charge in ChiangMai