WeddingTropics is one of the largest online sources for unique island wedding apparel. They specialize in their own designer label of men's linen beach wedding attire and a wide variety of simple traditional beach wedding dresses and bridesmaid dresses.
This is a great source and will hopefully prevent you from the mad search I did for my own destination wedding attire. (Dressing my husband was a much easier task!)
A few of the styles for men:
I don't know what it is about this dress, but I love it! Destination Weddings are fun and carefree and so is this dress:
And this one... looks like it will blow in the breeze perfectly: