I'm ancient, so I always used to take a bit of local currency, then travellers cheques 'cause they couldn't get stolen (or at least, I got my money back if they did).
Then they moved to prepaid cards, which I don't really get, as I can just use my debit card.
You can still get travellers cheques and I am tempted to do so, along with my debit card and a reasonable dollop of cash. Am I being sensible?!