Well, wedding close to sea, I presume. The taped lower right-hand corner tells me this photo has seen a lot of love over the years. Very cute!
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.