Plus, it's an unlimited use item after 3.0.2 (14 day duration, though BotM members can buy more in Ironforge), which means you get as much alcohol as you want, and every time you drink one, you get an "empty brew bottle" to throw with a glassbreak bang. Very fun.
If you didn't round up enough tokens to become a BotM member, you're unfortunately out of luck -- I originally thought you could buy the brews in Ironforge even if you weren't subscribed, but no dice, and the brews you get sent are soulbound. You'll have to wait until next Brewfest to sign up for your monthly beer. Can't wait to see what shows up next month!