It wasnt too much of a problem, coz i would get out a few hundred bucks at a time. I didnt feel unsafe walking around with a buttload of cash in my pocket, coz i was always in groups, and my wallet was either always on my, or always locked away in my bag or a locker of some kind. So it wasnt so much of a problem.
Look at getting both forms- something you can get cash out with, and something for over the counter EFTPOS style use. THere are lots of places that only do cash, so having an ATM card is a bonus, whether its the Travelex Cash Passport (what I had), or your own card from home (look at overseas use fees, currency conversion fees) but the debit/credit/EFTPOS card is good where you can save money on ATM fees. Coz they sting. Again, read the fine print regarding fees.
"It's the kid inside of us that keeps us all from going crazy..."