How did I know it was a nautical event even before I saw where they were
The whole 'modern twist' is chucked out the window when Kate does her costume thing. Its like an episode of the Magic school bus. 'It's a nautical event, better look like a sailor'. She does it with military events as well. All that is missing is a sailor hat fascinator.
If I could move past the event, its a cute look. Her casual looks are her best.