Mary Alice ends up getting married in Grandma Dowdel's house, in the last year of World War II.
Because Joey is off serving in the war and their father is working with Boeing in Seattle, Mary Alice's family can't make it to the wedding.
And because the groom is also serving in the army, he only has three days of leave to spare.
The whole affair is quite simple and spare, because of the war. Mary Alice saves up her ration cards to buy a new pair of shoes and a suit, and Grandma Dowdel makes her bouquet and bakes a wedding cake.
And when the time comes, Grandma Dowdel is the one who walks Mary Alice down the aisle and gives her away…and we find out in the second-to-last sentence that we know the groom quite well. It's Royce McNabb!