Need ideas for a great vacation spot!?

My boyfriend and I are going on our first vacation together in January. This will be my first vacation ever, he’s been on several. I’m so excited and I want to do everything! I’ve been searching like crazy online, so I thought I’d try asking on Yahoo Answers. These are some of the things we want on the vacation:

* Beaches and snorkling (somewhere warm in January)
* Zip-lining!!
* All-inclusive resort
* Rain Forest to hike through
* More relaxing, not so much of a party town (although we’d like to be kind of close to party spots, so we can go if we feel like it)
* Waterfalls we can swim by or under
* Horseback riding, parasailing, swim with dolphins, jet skiing
* Somewhat affordable

If you know of any spots that have all or most of these, please help. I know we’re trying to get everything on the vacation, but why not, right?