A polo/golf shirt that's worn on a casual night can be "air and wear" for the next day.
Exactly. There's not much point in putting on a clean shirt to wear over a bathing suit on the way to the beach or on a sail/snorkel expedition, or to wear for an active day of sightseeing, hiking, canoeing, or whatever else one's plans might be.
That said, I basically published the gent's version of the list. Ladies will need to make appropriate adaptations -- the polo shirts might become tank tops or blouses, the slacks might become skirts, the formalwear becomes a gown or a cocktail dress (your "LBD"?), etc..