Not to keep posting pics I've taken, but like jjdcamper says, "I'd take everything I own".
Below was from my first trip to Cabo and we took a private yacht out to see some wales. I decide to not drag my big camera or lenses with me thinking my P&S would work and we could get close if anything. It was getting low light and you can see the best shot my P&S took, and compare that to my previous post I took the following year.
Have fun, take lots of pics! I'm heading to Punta Cana next week, so I'll be back posting more.