Comment by yeputons

If you're lucky with your citizenship. Others get 3yrs or 1yr max. And that's after administrative processing if you're unlucky, which might take years: https://daniel.haxx.se/blog/2020/11/09/a-us-visa-in-937-days...

And for some passports in the last, say, six years, the probability is significantly increased. There is no official information as far as I know, just some anecdotical evidence from forums.

And before all of that you have to remember all your trips for the last 10 years to enter into DS-160 (you learn to keep a spreadsheet after the first time you do that, UK visas require that as well). And secure an appointment, which (since 2025) must happen in the country of your citizenship, or the country of your residence, which you should prove (sometimes it takes years to get residency documents in some EU countries). If you're unlucky, the waiting time for an appointment might be measured in years too. If you get a waiting time after all, sometimes there are just no appointments available whatsoever with no extra information.

Attending a company event is, of course, not a valid reason to get an expedited appointment. At least not that I've heard.

And I'm sure there are even more tricky things that I haven't heard of.