Hi,
Having just come back from Greece I have a fair idea of costs etc. now. With the problems they have had economically, restaurant meals and drinks were not as cheap as I had envisaged, and I think this fact caught a few of our ladies out, and they kept having to go to the ATM more frequently! I always take a fair amount of cash (Euros) and also a credit card with me (if you are the right age (!), Saga's card doesn't charge when you use it abroad, unlike some others). As a rough guide we probably spent about 20 Euros a day on lunch (depending what you drink of course!), and depending what souvenirs etc. you want to buy. Don't forget to allow for tips for the Tour Manager (if they are based in the UK I normally pay them in Sterling), the driver and the local guides - JY will have given you an idea of how much in your holiday information. If you are overnighting in Heathrow or Gatwick, don't forget to take extra sterling with you, or pay for your meals by credit card.
Hope this helps.
Cheers,
Hils