Subject: Puerto Rico
We have the opportunity to do an extended layover in Puerto Rico later this year. I've started watching videos, but was wondering if anyone had some "must-do" items, or even a "don't bother" advisory. We could arrange probably two nights easily, or if it's worth it, a bit longer with only moderate difficulty.

Opinions?

Obviously the videos I've watched are enthusiastic, but so far not informative about actual sights. A lot of info about food (which does look good!).