LR - I pretanned a few times at a fake & bake tanning bed, & of course used sunscreen. I don't burn easily, but Mick does...he got a nice tan though using sunscreen.
Mona - woo hoo! I love Mexico; I could live there, I think. Jamaica is really nice...but for sea + scenery + wildlife, I'd go for Costa Rica - a bit cheaper, too, specially in the (not terribly) rainy season. I've been there twice & really like it. It's also safer in terms of crime & being able to go off & do your own thing.
And of course everyone is welcome to stow away. But you have to bring your own tiny mesh thingie for Pajama Nite, and be OK with being a nudie for a week!