Could I echo muppitz's v sensible comments. If you have a criticism of some aspect of a festival, sending a polite email or other communication to the organisers is likely to have a much better outcome than some full-on whinge on a public forum which needlessly raises hackles. Surely we are all in this together, trying to have a good time at a festival, enjoy a bit of music.
And, on one specific point. It will be a sad day when nobody wants to jump about to well-played rhythmic dance music; and not everybody likes being told to do-si-do by a caller. Some do, some don't. It'd be very boring if we all liked the same thing.