Some would say that if you need a spreadsheet to plan your social life, you probably have no social life. I say no.
I say, allow technology to do what it does best. In this case, organize information and make it easier to have good times on the cheap. Frankly, I can't think of a better use of Google Docs. This spreadsheet is created by Redditor Grimitar, who should be commended for his contribution to cut-rate quaffing.