What do I do?  I have been to many weddings that were not open bar and it didnt bother me... its 50/50 here to have it or not. As an option, I was considering having all non- alcoholic drinks free (ie soda, coffee..)  and just have my guests pay for their own beer/wine if they choose to drink it..  At least i'm paying for something and they dont have to worry about buying a soda... Our venue only offers beer and wine (and the champagne toast) as it is because its on a college campus.  What do you think?