Originally Posted by
Machka
Have maybe $100 with you ... some places don't accept credit cards.
Use a debit card to top that up as necessary as you go along.
This ^^^^
I use a debit card where I can which is most of the time, but there are still places that much prefer or even require cash. BTW, in some places it is a good idea to have some small bills to pay for campsites that use an honor box.