It's that time of year again, folks: time to get smashed with no lasting social repercussions! This year, Brewfest runs from Tuesday, Sept. 20 to Wednesday, Oct. 5 (check your in-game calendar for your server's exact start and end times), and drunken frivolity is the name of the game. The Brewfest meta Brewmaster is required for the year-long What A Long, Strange Trip It's Been, so you'll want to get this done if you're working toward a Violet Proto-Drake (and thus free 310% flight).
As with the 2010 version of this guide, I've organized the holiday's achievements in the rough order I feel they should be completed, as one is dependent on having some help from other folks around your server. As with most holidays, there's high participation at the start, which dwindles as folks get their drops and complete achievements, so I prioritize getting Down With The Dark Iron done as quickly as possible. Once that's out of the way, Brewfest achievements aren't generally difficult, though they'll require a little elbow grease if you're starting from scratch.
I've included all of the achievements attached to the holiday, but you'll only need six for the meta, and they've been marked as such. As always, I'll be around when the holiday goes live to see if there are any unannounced changes. We don't anticipate any major differences to Brewfest this year, but the holiday boss, Coren Direbrew, does have an updated loot table with ilevel 365 drops.