In reply to TMM:
> I use Halifax Clarity for non-UK spending.
Same here, it is just a normal credit card though so can also be used in the UK.
These days most countries seem to have followed the UK in cards being accepted pretty much everywhere. Although I always also travel with some cash, the fact Euros can be used in so many countries is a bonus as it's likely you will be able spend any unused cash on a future trip.
Just be aware that you will get charged for cash withdrawals with any c.card, so your normal debit card is probably best for that. Also you will get charged a fee per cash transaction, so better to withdraw a lump rather than just €10 a day.
Just remember with cards to always select to pay in local currency if given the choice. Your bank always calculates at a better rate than the shop/machine offer.