1. What is the fastest way to get Vietnam visa on arrival/Vietnam at Airport?
BIG NEW: 1 year tourist visa for USA passport From now on (26/08/2016), Vietnam tourist visa for all USA citizen to Vietnam will be automatically and mandatory converted into a 1 year tourist multiple entries visa with maximum 90 days duration allowed of each visit. It means you will have to do visa run (or in-country visa extension) each 90 days if you plan to stay Vietnam long term.
How to get 1 year visa without working permit?