My son is going on holiday to Holland in a few weeks. It's been over 20 years since I was last on a holiday abroad, so I'm hoping you can advise. Is it best to take enough cash with him to cover his spending money, or is he better to just take a small amount cash and use his debit card. He's a bit careless, so I've visions of him loosing his money if he takes too much cash but then would the charges be expensive if he uses his debit card instead?