UPDATE: An outdoor lighting video tutorial is here.
Here is the render. There are better ones, definitely, but there are worse; and what I am about to explain will hopefully be of help to those who are still confused about skin and lights.
I loaded the Ultimo Paradiso product from DAZ3D via the "Build Island" and "Few Plants Only" scripts (I may be getting their names a little wrong). Most materials I did not convert, just the ocean (to the DAZ Water shader, with the aqua color added to the glossy color) and the Island itself (so that I could add metallic flakes to the sand). If anything, this ends up looking less realistic than the character even after I added SubD to all the meshes that are visible close up. It wasn't really made to be seen this close. I deleted the sky dome to use DAZ Studio's Sun-Sky.
The amount of geometry in the scene doesn't slow down the render much, b