Scenario, one attends an event which begins at breakfast, kilted. Dress is basically casual.

Ergo, kilt, plain day sporran, belt without large-bright buckle, Oxford shirt, solid colour hose, wool flashes, generic tie-shoes.

Same event continues, transitioning from day to evening and supper about 8 PM. One does not have occasion to leave or change to "evening attire."

Should the attendee dress at breakfast "for evening" (Argyll jacket and sporran with bright cantle, necktie and "evening" flashes)...

...or risk appearing hopelessly gauche and endangered by the kilt-kops and go to post-6 PM events in "day clothing"?