If you can't drink something special on you're wedding day when can you? As long as there is something decent for the others, I don't think that it's tacky at all. Your wedding should be all about you and Mrs. Whiner, and since you're both passionate about wine, it should be the ideal evening to crack open something special. If there's one day you deserve special treatment, this is it. Is anyone really going to be offended by the newlyweds drinking nicer wine than they are? Anyone who thinks like that probably feels that it's unfair for the bride to wear the nicest dress, or that the couple gets wedding gifts, gets to go on their honeymoon, etc. That's just crazy. Tacky would be inviting friends over to a wine dinner and serving them schlock while you drank Marcassin. Live it up, enjoy your day.