Q: How welcoming are schools to a potential candidate trying to stop by for a in-person visit early in the hiring cycle?

I'm a SS HS teacher in Texas. Four years under my belt, Licensed, Masters degree, AP experience, and ready to leave. From all the lurking I've been doing I think I should be competitive at least, but I want to potentially give myself a little springboard into my first placement internationally. I enjoyed Vietnam when I vacationed there a couple years ago, and am considering going back for my Thanksgiving break. Would it be well received by the schools there for a teacher expressing interest to come by while in the country on holiday? And if so, should I focus on the schools that are on the American curriculum or try to stop by as many as I can in order to get some face time? Any and all advice is welcome!

Primary reasons for targeting Vietnam: Familiarity with the culture and cuisine, Savings potential, and (could be completely wrong here) I feel like I could integrate into the local scene better than in my second choice of China.