I've never been to Fylde Festival. I picked up a flyer for it last week and the first thing I noticed is that it's the weekend after August bank holiday which I would think is not a good choice of dates for many reasons.
The flyer had a load of artists names on it but not one that I would make an effort to see though I must confess I wouldn't know what three quarters of them do. I did have a look at the website (after the announcement) but there seemed to be little there that would entice me and my family.
I reckon people go to festivals for different reasons. We don't have a campervan. We camp and go to one festival every year. Every penny is worked out. We have two kids so we have to make sure that they're catered for. They would be bored out of their heads going to concert after concert. Along with their mother(uke/tinwhistle) they love joining in the ceilidhs and other dances. They love to mix with the other kids and make friends easily.
I personally go for the workshops and the sessions. If there's no mention of a session, we wouldn't go.
It's families that you ought to attract and with that comes the lack of spending money. People will get picky. Looking forward to August bank holiday.