Diana decided that, despite her fair-skinned redheadedness, she wanted to get a little faux sun so she didn't burn in Hawaii. Since I've known her, I've never seen her burn, only get slightly red and with a certain amount of color in the face (and freckles, of course). She can in fact get quasi tan with gradual sun, so she's doing a few minutes at a time here and there fake tanning.
I entertained doing this myself, because I'm just an outright burner. But I've decided against it, because this is, after all, an act of slowly burning your skin on purpose. I'm just not comfortable with that. Even with sunblock on, I'm not going to get any less sun on the islands, so my total exposure will be higher, and I don't want that.
I think what I will do is not use SPF 5000 or whatever I normally use, so I come back at least looking like I went to the tropics, but again, I'd rather be careful. The last thing I want to do is find a big lumpy mole on my nose or something a month later that's actually cancer. And, God forbid, I might even wear a hat.