I did something similar at my cousin's wedding last summer. I exposed 8 rolls of 35mm, 4 b&w 400 and 4 Kodak NC 400. Kameras: Nikon F3 and FE. Two primes:50 and 24mm. They were happy enough with the result and I got time enough to enjoy the wedding. The wedding was really low key, probably more relaxed than most and I did not have to make any formal photos. If you would like you can see the best exposures at my flickr: