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Seriously? Your going to claim to not know of the existence of ATMs or cash back at most grocery stores/7-Elevens?

If this is actually your world, I hate to think of the places you'll be constrained to, especially in the US. Seattle is an oddity on the West Coast being card friendly, and from what I gather New York is a cash based economy like most of SoCal.

Stop at a bank every six months and pick up a few fives, it's really not that complicated.

This is the most ridiculous thing I've heard in a while.

There are ATM's all over the god damn place.