There are different types of tourist visas that you can apply for your trip to Phu Quoc. As a matter of fact, you can enter Phu Quoc visa-free but you can only stay for 30 days. But this would not be enough to enjoy everything in Vietnam. If you plan on visiting some other places aside from Phu Quoc, you might as well apply for the visa on arrival. With the visa on arrival, you can choose to apply for a multiple entry visa with a maximum stay of 90 days. This should allow you to enjoy Vietnam for up to two months.
Another reason why tourists would choose the Vietnam visa on arrival for Phu Quoc is that it’s so easy to apply. As stated above, there’s no longer a need to go to a Vietnam embassy to lodge your application. Everything is done online. And once you have the pre-approval letter, you can fly to Phu Quoc and claim your visa upon arrival.