Don't tweet from the church: Royal wedding etiquette guide

Don't give the queen a friendly hug and don't tweet from the church.That's just the start of the advice being offered to those attending Britain's April 29 royal wedding.St. James's Palace says the guest list is an eclectic mix of European royalty, military personnel, charity workers, diplomats and friends of Prince William and fiancee Kate Middleton. Some invitees will have been born into familie