There are some neat excursions, but the "drive thru" volcano is a little over hyped. Since it's a sulfer volcono it stinks very badly. I did like a complete tour package, which took me to the botanic garden/water fall, volcano, snorkel. Was fun, they gave us free booze all thru out the trip. I also won the drinking contest so i got the most amazing tshirt(haha)
The zipline thru the rainforst I heard was amazing, but I didn't bring any tennis shoes so I couldn't do it. A couple said they saw a huge python sun bathin on a branch was they went thru the trees.
@rhone not sure what you mean by marine life. If you mean fish, ehhh there was plenty of fish to see. Not much coral.
Not sure on the crime, but I know we walked 50 ft from the docks to a bus to get to the gardens. We were bugged and begged by kids to give them a dollar. Drove us thru a town...looked a little rough. If you got high enough all the views were very cool.
Like I said, the island was fun, just the resort was lacking. I'm sure if I stayed at a diffrent resort I would have had a better time.