If you are using a non connected camera when traveling remember to change the date and time settings when you enter a new time zone. If you forget and you are also shooting with say your iPhone your shots will be out of synch and may even show on the wrong day.
I usually try to avoid lugging a camera when traveling but we recently had a trip across the Pacific to Patagonia and I wanted a zoom for wildlife (sadly the puma was only just visible even with 12x
but the penguins were great). Unfortunately I forgot the need to reset the camera date and time and was terribly confused for a while.
You can reset metadata in an app like Metapho but it's easier not to have to.