My best friend recently got engaged and they have already set the wedding date for Jan 2, 2010. Both the bride and groom want to have a combined Bachelor/Bachelorette Party on New Years' Eve and rent a party bus or something of that sort. They want to have a combined party to keep an "eye on each other." The MOH and I (bridemaid) are trying to talk them out of it. Boys will be boys and we would hate to have a drunken groomsmen say something that will ruin the whole party- causing a divorce before the wedding. Suggestions please?