FACT: Lightbulb to outlet power adapters are a thing that exist, and I would suggest bringing one on vacation as a contingency! Just in case you end up in . . . like, either a very old or extremely fancy building with no exposed power outlets, so you can just unscrew a lightbulb and charge your phone using it. After all, lightbulb sockets aren't proprietary, and haven't been supplanted by a modern alternative!
