I remember I once had a half bottle of raspberry smirnoff in the freezer (regular freezer not deep freezer but I'm pretty sure it was in direct path of the cold blowing air) and some of it definitely froze up. it was like about "half melted slushie" consistency.
On another occasion I threw a few cans of beer in the freezer to get them cold and drinkable quickly (back in my bmc days). One got left in there for almost 2 hours and when I went to grab the frozen pizza out of the freezer, much to my dismay there was a blown out can and frozen beer slush all over the freezer.
Also, after a little research I found that a bottle of 40% alcohol will freeze at -16.51*
Just some food for thought. I feel -10* might make some nice barleywine popsicles! :P