Let’s see, for a summer trip:
1 sundress which can be dressed up for evening with a wrap,1 sarong & flirty tank top set and a sun hat1 bathing suit and a cover-upSunblock and an umbrella.2 pr shorts (or 1 pr shorts & 1 pr long – depends on what you are wearing)1 easy to pack goes-with-everything skirt2 tee shirts (if you wear those, I prefer sleeveless shells with camp shirts)1 cardigan sweater.1 pr nice sandals. They work both for day or for dress up.1 pr sneakers or comfortable walking shoes (or you can just wear those)socks to wear with your sneakersextra undies
Don’t forget a nightie (your swim suit cover-up can work extra as a robe.)
Remember to count the clothes you are wearing as an extra outfit.
Bet you bring home something unworn.