Much of this is refreshing to hear. I have concerns that the island has changed a lot since I was travelling there just-about every-other week, especially with the exodus of state-side companies when the tax benefits were revised/reduced/eliminated (my prior employer being one of them that 'bailed'). But I am glad to hear that the people have not changed. I have a lot of respect for the Puerto Rican people, as they are truly a people of respect themselves. Stark contrast to our travels to some other Caribbean islands we have been to, where most of the population we encountered were opportunists.
As for the traffic, I was going to tell you this before you went, but decided against it. Before my first trip to the island in 1990, my then-boss "warned" me about the traffic. He said - "There are 3-million people on that island. 2-million live in San Juan, and the rest are in cars." There were times driving down the Autopista that I felt compelled to drop quarters into the dashboard to "keep playing the video game". My advise to people driving down there... "If you hear a horn, that means you made it." :0) It was always difficult to return to quiet/calm upstate NY because the driving mentality and aggressiveness that is
required in PR would stay with me for days!
As for the mountain "roads", yeah... insane. There are usually mirrors mounted-up on the trees and/or poles near turns or switch-backs, but you have to know they are there and where to look!! It sucked driving in the mountains, because as the driver, there is no way you could take-in all the beauty around you, and the mountain regions are indeed truly beautiful.
Thanks for the trip report!! I am now looking forward to taking "the Wife" someday when we can find the time/opportunity.