I do not recommend using a land camera to document a wedding. I use one and they make a lot of garbage. First, there is the package the film comes in. Then there is the peel apart paper that is left after the print. Sometimes I cram this in my pocket when I am shooting, but it still has the wet chemicals and gets all over hands or clothing if you don't watch it. Then there is the prints. They need somewhere to dry. At first they are curved, so they need to be put somewhere flat and they can not be stacked because the print is still wet. Polaroid is good idea, but go with something that is not peel apart.
If someone asked me to do the same, I would go with a Holga and high speed film. Make them a blurb book on your own time, after the wedding.