I guess anyone would want to immediately get down to "business" when they get so much youth and their wife looks like this.
Let's go on a honeymoon, granny! Ehh ...It's really young Shouzou-san... His grown snowy hair...Granny in swimsuit ... Taking bath together with granny ...Eek...?A date with grandpa at Atami ... with grandpa at the beach ...
Probably she refered to Atami City of Shizuoka Prefecture, and the beach of Atami The next dayGrandpa ... ?
It's the grandpa that I once devoted my love to ...