So according to this thread, this achievement could only be unlocked by drinking with the devs in person. There was, however, some talk of changing that requirement. Is it still the same? Since I am in the U.S. and not Canada, could I instead take pictures of myself drinking with my diggle plushie (once I finally get it) as a substitute? I am on a quest to get all of the achievements for this game, and I'm very close to finishing.
I'm in canada but there's no way I could see them in person (sickness sucks sometimes), I'm kinda curious as to this as well.
Technically speaking, it's only drinking together with them that counts. But then again, unless you have an OCD, you might as well leave this achievement undone if you can't meet with them.