May I apply for a visa on arrival from USA, go to Vietnam then 6 mos later travel to philippines. I can get a visa for philippines at airport in cebu. I then will have to return to HCMC for my return flight to USA? May I apply for visa on arrival from philippines? I'm buying rt tickets to VN from U.S. Hence my reason for returning to Vn is that I have air tickets on Vn airways for flight home?