Wyndyl,
We never take any cash with us. The ATMs do the trick. You can step up to an ATM and get the 50 Euros when you get there. No sense paying the exchange rate here when it's cheaper through an ATM machine.
In fact, make sure you take two different ATM cards with you. Keep them seperated so if you lose one, or its stolen, you can go online and have that one cancelled, and still use the second one -
If possible, do the same with Visa cards.
Wolf