A couple of tips to ease your concerns regarding AN:
There is some shaded areas on the island
You rotate if you stay in the sun
Bring a book and place over sensitive area for a while, or at least use it for shade
You may end up in the pool or water part or all of the time, cutting back on the sun
Reapply generously after getting dried off from the water.
Oddly, we've never burned where the sun doesn't shine, despite our backs, shoulders and faces getting burned, all while using the same sunscreen.

