A visa should be asked for at least one or two months before a trip.
You will need a Brunie visit visa unless you are from a country that doesn’t need a visa to visit Brunie. The Brunie government has made getting a Brunie visa online easy and quick. You can apply without leaving your home.
Yes, you must go through this process because your visa will be checked on paper in different places by different officers.
Most of the time, it takes five working days to get a visa for Brunei Darussalam from one of its embassies or consulates outside of the country. On the other hand, there is always a chance that your application will be turned down because you can't meet Brunei's visa requirements.