Great monster flick, but... (SPOILERS)
This looks like a tongue-in-cheek (no pun intended) cross between TREMORS and the old British semiclassic ISLAND OF TERROR. (SPOILERS AHEAD) But the main premise doesn't make any sense. The fact a person is totally soaked with booze does NOT prevent him/her from being eaten or decapitated after all -- it only happens that IF a grabber would suck someone's blood with a high alcoholic rate, it will dry up... but ONLY if the victim is actually attacked. I thought at one point someone would sacrifice a cow or a sheep injected with alcohol -- or even offer a pint of alcohol-soaked blood in a jar or something -- to the blasted creatures.
Then again it's a lot of fun, comparable to last year's sleeper ATTACK ON THE BLOCK.