I learned a lesson about stashing "goodies". I had cheese in my stash, so added dry ice. Decided to put one bottle of beer for a treat. When I got to the cache, the dry ice had frozen the beer, which expanded and leaked sticky beer all over my food! Needless to say, I not only had no beer, I had a big mess to clean up and a stale beer smell for the following week.
You can freeze beer but not in a bottle. Best to try it at home first as some brands in cans survive the freezing better than others. Fat Tire goes through the process unscathed but haven't seen it in cans much outside of Colorado. I think Tecate also worked for me.