I would say that it is more that the guests are asked out of respect for the faith of the individuals being married that they celebrate with them in a way that is congruous with their faith. It is not shunning an individuals right to choose but rather a request, I would think, on the Bride and Groom's part to abstain for that day at least at their festivities from drinking alcohol. When I married my wife, we chose not to have alcohol at our wedding in part because we didn't want a bunch of drunkards at our wedding, and dealing with our families was going to be difficult enough with them beng sober... :) A little humor. 
 
I think the real thing you have to ask yourself if it is so important to you that you cannot give it up for even one day...