The Family Vacation 2010

We're about to embark on their biggest family adventure to date: Disneyland! We're all booked. But we're not packed or prepared, so share your secrets everyone: What do we bring? Not bring? Where should we eat? Not eat? Will we be able to afford to eat? What are the mustn't miss rides? (For kids and adults, since my most excellent mother-in-law is coming, and has volunteered to sit an evening so we can go on the scary rides.) We're green. Help us out!