My grandpa was a photographer. Instead of throwing rice, the guests used the flashes from their cameras.
This is a picture of my grandparents' wedding in 1949. Although they have been divorced for nearly 40 years, they both died in 2011, only a half year apart.
Thank you for sharing this story and great photo with us! At the risk of sounding irreverent, I'm pretty sure I know what your grandfather was thinking when this photo was taken.