As much as I hate to have to bring this up, please remember that this particular party is all about the bride and groom. It's not all about you; you're there to (hopefully), along with everyone else there, send them off on a lifetime of love and happiness, and at least have a grand old time on their wedding day. So put on your best suit, your best smiles, and be happy for them. For they only have a two in five chance of getting through this thing successfully, and marriage is a lot of work. They just don't know it yet. So let them enjoy the good times while they last!