I can't stand Brewfest.
I know I can turn the effect off, but it takes away from the game. I also like to think of it as an anti-alcohol ad, so whenever I drink, my screen gets so distorted that I actually feel physically sick.
I used to think Brewest would be fun, but now? Ugh, there's about 90 people in one spot, all doing the same thing: getting drunk.
To make things worse, if you're trying to whisper a friend, and you're in that area, it's absolutely loving impossible, with everyone getting acheivements, and drunk off their asses.