$ and traveller's cheques?
Insurance?
Theme Park tickets?
Road maps?
Anything specific you need to pack, such as medicines, toileteries, things you cannot do without? Electrical plug adaptor etc?
Have you thought about groceries when you get out there, where the nearest supermarket is for example.
A rough plan or itenary? Must admit after the first couple of days we tend to just see how we feel each day.