...some random was to walk into church and watch your wedding?
Obviously because churches are a place of worship they cannot be shut off to other people just for your wedding. Would you offended if people just randomly walked in and took up a pew part way through your ceremony?
One of my neighbours goes to our parish church who is a complete and utter weirdo (lets call her B), and will no doubt will turn up on the day randomly, although she doesn't normally go to church on a Saturday. My next door neighbour died a couple years ago from cancer (lets call her A). I watched B throw hedge clippings over her fence onto A's garden knowing full well A would truggle to pick them up as she was so house proud! On the day of her funeral (A) the 'weirdo' actually told the funeral cars to move from outside of her house...I mean for goodness sake have a little compassion! Amoungst other things she is an awful neighbour (B)!