Yes, you can have alcohol in shelters, it is cheaper, safer, and in all ways except performing a puritan morality play, better. It's called low barrier shelters, or housing first. Seattle's DESC housing has been successfully providing it for decades. Plenty of successful programs have implemented it in multiple countries. It is not a new idea or an untested idea. You can't have it in a shitty "shelter" that just lays out sleeping mats by the dozens in a big empty room and then turns out the lights, no. So what?