I sometimes feel the same about parties I get invited to when I am asked to bring my guitar with me.
For the eccentric wedding I mentioned above, when asked, I told my friend that I had decided never to do wedding photography but in his case I would make an exception. The other one was someone at work who just wanted a few snaps of him and his wife after the service.
Neither of the weddings I have photographed could be described as 'normal' and in both cases I had the negatives processed and printed to 5x7 and gave them letters transferring copyright so they could get their own prints made if they wanted to.
I surprised they didn't ask you to do both Steve.