I myself am a huge fan of the Higurashi series, and I quite enjoyed this special. This special was extremely enjoyable for me, having the entire Hinamizawa gang parading around in hilarious outfits was an absolute treat for me. As for the actual Higurash-esque part of the episode where it gets serious, it's ok and intriguing, but you can't really take them seriously when they are wearing those outfits. And we never really find out the mystery of the episode, but it was pretty good, I mean it is pretty hard to fit an entire compelling mystery into a single episode, so I'm not gonna rant onit.

Overall, if you like Higurashi, you will like this, so just watch it already.