So I'm reading "The Knot Complete Guide To Weddings" chapter on the ceremony right now and I have a question- in their "sample ceremony schedule" they recommend actually starting the ceremony (as in beginning the processional) 40 minutes after the time you put on your invitation, in order to "give everyone plenty of time to take their seats"... this seems crazy to me so I wanted to check with you ladies to see if that's actual proper etiquette. So like, on my invites it says "half past three in the afternoon" or whatever, but I'm not actually supposed to start until after 4:00? If I were invited to a 3:30 wedding I would plan to get there at 3:15 to make sure I had time to get seated before the ceremony, in which case if what this book says is true I would actually be arriving about an hour before the ceremony begins which would annoy me... is this really how it works?