Nowhere close to Cambodia : you cannot just show up at the airport, check a box, pass go and collect the monies
Much more bureaucracy over here, meaning that while you do not need a business, you most likely have to go through an agency that will organize a letter for you for when you cross the border. Again, the visa situation is quite sensitive over here, even more so this year, meaning that it becomes case-sensitive.
Why are some peeps now being turned down while others can get a 3 months renewal? And this, through the same agent (Mr. Hung, in Hoi an, who is renewing certain people while informing others that they can only get an emergency 1 month extension ; I also got turned down from another agency that offered to me leave with a letter, return with a business visa for either 6 or 12 months)?
tl ; dr : look into it.
edit : anybody else have any info?