June '09 (6 days) - We spent about £950 gbp in total. I would guesstimate £500 on food, £450 on other stuff - toys, ice-creams, popcorn, photos etc.
June '10 (6 days) - We spent about £1100 gbp, again I would say £500 on food, the rest on extras - although we let our two get a toy each every day on this trip.
We are going in July this year and I am going to take about £1000, we are going to buy them 2/3 toys each while we are there. Last time they were choosing stuff for the sake of it because they knew they could have it. With any luck I will get a bit of change this time!