Look up-thread. I went once, in an awesome place. Started on the top of an island mountain and ended up after 15 stages on a beautiful beach with tasty drinks. Some were steep and fast, others long and slow through a canopy filled with Macaws and Iguanas. Some were high off the ground, others barely skimming rocks and cliffs. I went with my Wife and kids, and yes - it was fun as hell.
I also had one in my back yard growing up that we made too steep and my friends and I would absolutely wreck ourselves every time. That lasted about a week until my buddy broke his arm.
You know what else is some good "yuppie" fun? Adventure Parks like this one:
http://sandyspringadventurepark.org/