Met with my officiant the other night, and mentioned that I have planned to start my ceremony at 6pm. She said that in her experience, it's always a good idea to put on the invitation that the ceremony will start fifteen minutes earlier than the ACTUAL start time (so, in my case, 5:45) to give latecomers a chance to straggle in. I'm wondering if this is a good idea or a horrible idea. I can see how it would help with the latecomers, giving them an extra 15 minutes to arrive, but I'm worried that the punctual guests who will show up around 5:15 or 5:20 will end up sitting there for forty plus minutes waiting for the ceremony to start. What do other Knotties think of this plan?