Hi Fly,
1. Which South East Asian countries have you not been to?
2. Does the casinos have the card game "13" (Tien Len)?
3. Please elaborate on exiting every 6 months to renew the visa, as in:
a. You return to the US about once or twice a year for renewal?
b. Typically, how long is this renewal process?
c. Once the renewal is compete, can return to VN immediately? Or perhaps a waiting period, and then can depart back to Vietnam for that licentious life
Can Google and research these visa policies, but always great to ask someone who is currently going through the experience.