I go to get the Folk fix which I don't get every week. This encompasses ALL of the above to more or less degrees.
It also includes Morris Dancing which I don't think was mentioned.
The pecentage of time doing the different activities varies, some times I miss the Main Act I was trying to see because of all the people I meet on the way from one stage to another. Some of these people I only see once a year at that particular festival (hi Charmion and Edmund) I have a good friend now, who I got to know through about five years of one Festival, then one year he turned up on May morning, playing for one of the other Morris teams.
I volunteer and MC a stage at one Festival, I used to stage manage at another festival but that was a while back. I have also done the Craft thing and done a Blacksmithing demonstration at what was THE best Festival I have been to the unforunately defunct "Songs of Sail" in Penetanguishene. We even perform at some festivals coming to think of it.
The late night sing arounds are admittedly one of the highlights of any festival. I was also quite impressed with the Beer Tent at the only English Festival I have been to, since moving to Canada in 1977.
So like I said ALL of the above.
JohnB