My advice is to become "new school" on ATM's....you'd benefit on this trip because 1) you get the best conversion rate, and 2)I didn't pay any ATM fees in AMS on my card.

But since you couldn't get a card by Saturday, even if you wanted to, here's the next best thing....go on Yahoo Finance or similar and find the exchange rate for the last business day before you leave. Then you can tell which exchanges are giving you the best deal.

In AMS at least, there were plenty of exchanges in town. If it's like the U.S., the airport ones won't be your best bet.