Travel photography is as much a logistics problem as a creative one, since you're usually shooting in unfamiliar places with limited time and no easy way to replace lost gear.
The biggest mistake in travel photography prep is packing for every possible scenario instead of the trip you're actually taking. A versatile two-lens kit almost always beats a heavy bag you'll be reluctant to carry every day — and the gear you leave at the hotel out of exhaustion is the gear that didn't help you.
Storage and backup deserve real thought before departure: knowing how you'll back up cards on the road, whether that's a laptop, a portable SSD, or cloud upload, matters more once you're somewhere you can't simply replace a corrupted card. A little destination research — what's actually worth photographing, and roughly when the light is best there — turns wandering into a plan.
None of this needs to slow you down once you're there. The point of preparing logistics in advance is exactly so you're not thinking about gear weight or backup strategy while you're standing somewhere you may never be again.
A few things to plan for