What to see? What to avoid? What's a waste of money and what's totally worth it? Etc., etc., etc.
Keep in mind, I will not have a rental car while down there. That may affect your recommendations.
So far my only plans include the following:
1. Drink. (Let's hear it for the all-inclusive: Hip, Hip, HOORAY!)
3. Buy and smoke some Cuban cigars.
4. Swim with dolphins.
5. Horseback ride on the beach.
6. Swim in an underground river.
7. Drink some more.