How much money you bring with you depends on what you want to but.
I live in Sweden and I'm keeping ín mind that restaurants that serve
dinners in Stockholm easily cost around 25 euro for a table dinner. So,
it's not much different. It's always a question of where you live in the
world, and what you live on
What I can say is that, if you look around at your local toy store, you
can find Disney dresses for a good deal. I just went to a nearby store
and the Treasure chest with four dresses was 249 kronor (27 euro). Those
were the smaller sized ones. The larger sized ones were about the same
price for one.
I'd try just buying one or two items for the kids and spend the money on
foods, knowing that you'll save money by buying the same product at
your local toy store. You'll save a LOT!
The main question is: How special is the trip. If one feels that this is a one
timer and wants to buy souverniers or get Disney stuff while you are at the
"original" place, then go for it. I just got three things that I liked a lot:
1. A souvernier book about
Disneyland
2. A blue "15th Anniversary" shirt
3. A double CD with Disney music.
I don't have children, but I can imagine that there are those who have
children wanting a lot. If you look around, locally or through the internet.
you'll have an idea of what you can get at a later time, at a lower price.
You'll be able to get a good idea of what the kids like, just by observation.
if they lieks something you've seen elsewhere at a lower price, you'll be
able to save money by getting it elsewhere than at Disneyland.