Heat and humidity, you've got that right! Only my personal opinion and experience, but sundresses are the way to go. I've worn sundresses to Lemongrass and usually a cocktail dress (nothing too fancy) when dining at Feathers, but I've seen people in sundresses there too, and there's nothing wrong with that. We stay for ten days and I pack 8 or 9 sundresses/dresses total, I never worry about what I'm wearing on the sad goodbye day because I don't care how I look. I look sad! Probably, like most of us, you will spend your days in a swimsuit and cover up. Enjoy your vacation! Only 104 days left for me until CSA. Soon come!
There is no unhappiness like the misery of sighting land (and work) again after a cheerful, careless voyage ~Mark Twain