Today, during dailies, at the Neutralizing the Plague quest, my team helped a pair of players do the quest.

They stood there with me, and alternated which of them would click their potion.
As I did the same, but with two of five doing potions.

Even with twice as many mobs, it was a pretty easy quest.
My pally tanked for both groups.

Pretty sure the warlock and boomkin in question are not anti-boxer now.
They both said thanks.