BUT — and please forgive me if my reading comprehension has gone so far completely into the toilet (it hasn't, honest) — the caption on the screenshot (from when it was fist posted) specifically says that y'all did this (farmed the feasts) BEFORE Cataclysm launched:

""So, in anticipation of the new guild experience system and the rewards associated with achievements..."

""Unfortunately, by the time Cataclysm went live, the experience from achievements was 86ed and the Dragon Feast was moved to a different achievement."

THAT is what I'm chuckling at — putting in all that effort toward a feature that wasn't even live yet, and still subject to change. OTOH, you're the first person here to actually mention the name of the achievement you were working on (it's not mentioned in the article above, in the original screenshot caption, or in anybody else's comments). Without that bit of information, I was left assuming there must be a guild achievement for *cooking* the feasts. Now that you've named it (Dinner Party), I see the achievement is actually for *placing* the feasts, and I can see from the screenshot that you did so *after* Cata dropped. So my bad for assuming, and congrats on the achievement.

FWIW, the person I reported for spamming these in Dalaran was doing so a good 4-6 weeks *before* Cata dropped, so they weren't doing the achievement, they were just being annoying.