This is a tremendous waste of ice that could be keeping poor people's food from spoiling.
People are starving in the third world every day and maybe if they had some of this ice that wouldn't happen.
Just using ice will make crystals form and destroy their brains anyway, just like TV.
http://www.dailycamera.com/boulder-county-news/ci_18282009?source=most_viewed
I'd imagine the efficacy is halfway between proper cryonics and embalming and burying; the more interesting part may be the festival. Nederland is a small town 20 miles from Boulder, CO. I doubt the festival attendees are cryonics advocates, but they don't seem prone to the negative associations corpsicles often raise. Perhaps it's just because Boulder, Colorado is full of weirdos, but I wonder if there are more exploitable effects in play.