Our officiant would like us to have the ceremony 'start time' listed as a half hour before the actual ceremony time on our invitations. (Our ceremony is scheduled for 2 pm, so the invitation would say 1:30). He may have multiple weddings that day and has seen enough weddings that don't go as planned, things run behind, etc, which can mess things up for everyone. He also says that the extra half hour gives you some wiggle room.
My fiance and I always show up 20-30 minutes early for a wedding ceremony, and so in turn we would hate for our early arriving guests to think we were that far behind. We are also having an outdoor ceremony so would be concerned if it's a hot day, people may be uncomfortable waiting a long time.
Obviously in a perfect world, the bride would be the last to arrive and everything and everyone would already be in place. I know things can always go wrong and that chances are everything won't be on schedule on the day. Did anyone have problems with late arrivals? Does anyone have suggestions to help prevent this so we can have things run as close to on time as possible?