Is that from the adult one? I Know kids is aimed higher but I kinda got the impression this was the first year they offered a purely adult one think it was mixed last year and aimed at kids with all the off ice dance classes etc.
Oh just read bottom bit, I realise it's not a magic fix
unfortunately I know only too well that magic wands don't exist and if you struggling with things then obviously no a three day school won't fix it but it might give you ideas to help you put it right with time and patience, think anyone going to one of these who isn't in their sponge phase of skate uk where they soak it all up and can just do it after couple of tries ( jealousy!!!!!) won't just learn it overnight, but I do also think that getting lots of opinions on things can sometimes help especially if you're struggling. It could just be that it hasn't been phrased right yet for you, but if like me you've heard every explanation going on certain elements and still can't do it then no, you won't come away having mastered it.
I guess it depends how you look at these things. If you see it solely as to learn more then you'd probably be disappointed cause for the same cost you could always have loads of private lessons, but if you see it as a bit of a social thing with a bit of skating involved then I don't think it matters too much the level you at within the schools level limits if any of that makes sense?!