5. Carry a small hand sanitizer
Nothing is worse than getting sick on a trip. Not saying this will stop it, but you encounter a lot more objects that aren’t your own in which something can spread. At least having clean germ free hands helps.
6. Negotiate
Any time you get screwed over in your travels, negotiate for an upgrade or something to be compensated. It’s not your fault the hotel overbooked or there’s a mechanical error on a plane.