Many places have a ฿300 minimum for cards, attract a poor exchange rate and service fee to accept foreign cards, the 3rd party verification service rejects your card, or “the machine is broken.” Pay for hotels on Expedia or similar, bring cash and exchange for baht.
there is nothing on us website about sponsorship. They are very suspicious if she tells of her relationship at all. US officials are afraid she will marry him while i. USA as tourist, which entitles her to green card and eventual citizenship. They want her to apply for fiancé visa, which is more difficult and time consuming