According with benjammin I try to keep some supply stocked in the areas I frequently travel to or even I have to in futur times again. Making friends out there is important and not at least sometimes definitely the best "survival tool" that will perform successfully .
On the other hand I´ve to travel places I´ve never been before and will never be again. In such cases I try to send my mainsupply by courier or parcel service to my destination in order to avoid hassle with TSA or custom officers.
The things that can be stuffed in my daily baggage comes with me.
Finaly at destination I try to adjust for times might become a little sticky.
An other point is that I´m not willing to go to a public shelter because I would be forced to leave my dog behind.

Before went to anywere I update my CPOAF (yes I´m still using them in business and privat concerns today).
From my point of view the mindset and the knowledge about your surroundings are the key to stay happily alive.

As someone wrote here before: "The more you know the less you need."

Molf