I would wear my khaki capris with a flowered shirt to dinner at Parrot Cay, it fit well with the theming of the dinner that night.
I would wear black capris with a fancier shirt for Tritons and black capris with a white top for Animators Pallete.
You'll look fine. I have never heard or seen anyone say or do anything about clothing. Everyone dresses nicely, so as long as you look nice, you'll feel comfortable with the crowd.