Agree with the ATM route, if you have time ,shop around for one of the cards with low or no fees.
If you are going to get them in advance again shop around, take into account rates and commission. Couple of years ago needed a largish amount for a wedding present, saw a rate of 1.25 in co-op commission free, wandered over to Thomas Cook and asked for their rate, 1.23 no commission but when I told them of the Co-op rate 'forgetting' to mention the commission they immediately matched the rate commission free.