It's hard for me to be on your side here (as we are social drinkers), however, it is your wedding, and you can ask that there is no alcohol. However, with you going to AI, this may prove to be a bit problematic for you. Your guests may act like teenagers (who run out to the car to have a drink at a wedding), your guests may run out to the bar to get a drink and pretend it's a virgin drink. Now, if I may ask, if majority of your guests are social drinkers, could you not compromise? i.e. no alcohol following ceremony and dinner. But perhaps the reception have some wine/champagne and some beer available? I will ask my guests to come to the ceremony sober (well, NOT DRUNK). I have also requested that the ones that like to smoke somthin... not to do it before or DURING the ceremony and dinner. And those who respect me and my FI enough - will show it by doing what we have requested. I think you can request and advise no alcohol will be serverd, but at the end, like I said, you will see who respects you.