This episode quite frankly served no purpose whatsoever, in terms of the developing storyline. The whole thing with the 7000 different varieties of drinks was quite purposefless and I didn't see any point of it.
There were a few funny scenes, but they were outnumbered by much less enjoyable moments. The whole episode was quite dull, and both storylines that we witnessesd were not particularly significant or interesting.
I definitely think you can go with out watching this one. I dont' recommend, this episode, but for big HIMYM fans, it might be sorta OK. I'm expecting much more next week. Hopefully the last two episodes of this season will be better.