I wouldn't say "just the medieval bits," but not 
(depending on what one
means by "involved") in everything.  The purely 
business aspects - no,
that's the seneschal's sphere;  all the various 
guilds, practices, orders,
and other activities - in touch with, in contact 
with, but not *running*
them; planning for events - consulting on activities, 
but again not running
them.  The only thing the baron/ess is/are actually 
in charge of is court
and ceremony - which can in turn involve and affect 
lots of other people
and groups and activities.  So there's a lots of 
involvement all round, but
limits to the amount of running things.  Setting 
tone, but not setting
policy.
<p>
I hope these answers help to give you some idea of 
who we are and what we'd
be like as baron and baroness.  If you have more 
questions, or want a
fuller response to one of these, feel free to ask.
