I dont know the first thing about organising a festival, so wont try to tell anyone what to do, but to add my 2 cents i really think that for the general public to be interested in a two line kite display put on at a festival it must be of an extremely high quality.
Im talking the calibre of a Richard Debray, Tim Benson, Richard (whatsisname from R-Sky) etc.
Its hard to watch that standard of flying and not at least be slightly impressed, even for a Billy Barbecue type just walking past.
Anything less than than that will look like shite to someone who is not familiar with sport kites.
Average garden variety flyers wont impress anyone im afraid, and thats most of us im sure.
I got into sport kites while holidaying in Pt Fairy a few years back, Tim from the local kite shop had free fly sessions every afternoon at the local park, and it was packed !
Kids and adults trying their hand at two line kites for the first time, with Tim just handing out kites from the back of his car to anyone who wanted a crack.
I went back 3 days running and then subsequently buying my first kite from him.
Great marketing.
This type of free fly session with a small team of people making sure everyone has the kites set up ok, helping people launch etc. along with the type of display mentioned above, to show what kites can really do, could only help build interest.