Thanks Parrot Mom and Belgique
I've learned quite a bit from all of you on this post, and from the original OP.
We'll have to do the fort. I'm sure this is nothing like Acapulco, but man alive, when we were there a few years back, we spent so much energy fighting them off! Honestly, it was a wall of locals, pulling and pleading...so I'll combine my memory of that with caution for potential danger. Thanks for the head's up. I am looking forward to seeing it and will certainly do a ship-sponsored tour.
Belgique, I like your motto and if you don't mind, would like adapt that. It's very positive-thinking and so true