Originally Posted by
WineCountryUA
If the question is, having a passport while traveling a useful backup idea, I doubt many would disagree.
I always carry a passport just in case I lose my other ID (such as when it was stolen in BUD) or I have a change in travel plans that would require a passport (this occurred once and I was prepared).
However, carrying it just for diversions is perhaps a bit overkill. I doubt most road warriors on FT with many hundreds / even thousands of flights, even with a few diversions, has ever once needed a passport for such as reason. While a small number may have had such a needed, suspect this is very rare, I have not in 50+ years of flying with some 1,400 flights has that need arisen for my travels.
Having worked in PR for 6 months several years back I can say I was at that time NOT asked to show my passport. Now I always did carry it as I was often traveling to adjacent non US territories such as BVI. I suspect IF this is indeed the case it has something to do with the now recognized porous entry process into PR from adjacent islands and countries. I could tell many an interesting story about traveling in and out of PR but not on this forum :-).