When can I dance after FUE procedure?

If you already drank beer and danced, it would be a moot point to ask when you can dance.  There is nothing wrong with dancing.

2 weeks post FUE you really have no restrictions.  The only time to be concerned is if you still have crusting where the grafts where placed as crusting and sweat can lead to bacteria.  However, at 2 weeks, just about every patient is able to do full workouts, play sports, etc.  Hope you enjoyed your night out! 

Almost certainly not. At two weeks most doctors would clear you for strenuous exercises, so a little light dancing the day before should be totally fine. Really after 13 days the only way to damage your grafts is through significant trauma because they've established themselves really solidly by then.