Matt,
Yes this was thoroughly covered about 2-3 weeks ago, An artist here was traveling to Puerto Rico and was to visit the Rain Forests. You can search around and see. If you can't find it, I'll look. Here's her name: Debra Chmlina
Here's a link that she started and then later,asked about Humidity :
http://fineartamerica.com/showmessages.php?messageid=1980892
Ideally,when in South Florida, you want a nice cold room for you and a warm room for the cameras/lenses. So you can keep your gear locked in a car trunk, in your room in a cheap styrofoam cooler, in a closet,covered with a few blankies,anything to keep the glass, on both ends of the lens, from getting coldish. If the lens does get too cold, it may take 30 minutes for the condesation to evaporate,since it's not just the glass on the outside that's now cold, but ALL those on the INSIDE too!
I was in South Florida and made that mistake ONCE! Only, I was in a helicopter and with a bunch of attorney's and a nice cold camera and lens outfit!
Rich