We usually have a grand in the safe and I have a Halifax credit card that doesn't charge when abroad. Do, however, make sure that you have some low denomination euros or you may, like us, end up with half a hundredweight of shrapnel 'cos village shops love to unload all their 1s & 2s on poor unsuspecting visitors.
But what the heck, you can always weigh them in when you get home. Anyway just get out there and have a great time and if you do need some small change, just nip over the Snake and we'll be happy to donate to your travelling funds